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	<description>The place where space exploration, science, and engineering meet</description>
	<pubDate>Sat, 04 Apr 2026 13:00:09 +0000</pubDate>
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		<title>NASA-Backed Startup Plans to Bag a 100-Ton Asteroid</title>
		<link>https://orbitalhub.com/?p=4484</link>
		<comments>https://orbitalhub.com/?p=4484#respond</comments>
		<pubDate>Sat, 04 Apr 2026 13:00:09 +0000</pubDate>
		<dc:creator>dj</dc:creator>
				<category><![CDATA[Robotic Exploration]]></category>
		<category><![CDATA[Spacecraft Design]]></category>
		<category><![CDATA[TransAstra]]></category>
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<p>TransAstra, a NASA-backed startup, announced in March 2026 a groundbreaking study to capture and relocate a near-Earth asteroid approximately 100 tons in mass, marking a significant escalation in the commercial asteroid mining industry. The study, conducted in partnership with the space agency, explores methods for enveloping the asteroid in an inflatable container and moving it to lunar orbit for eventual resource extraction. </p>
<p>The concept builds on technology already tested aboard the International Space Station in 2025, where TransAstra demonstrated its &#8220;bag&#8221; system in low Earth orbit. The inflatable structure, designed to surround a small asteroid and contain its fragments during capture, passed initial verification tests showing it can survive the thermal and structural demands of space operations. The new study extends this approach to much larger objects, representing a fundamental leap in scale from previous demonstrations. </p>
<p>The company&#8217;s approach addresses one of the fundamental challenges in asteroid resource extraction: accessing material that would be prohibitively expensive to mine through traditional methods. Rather than sending mining equipment to distant asteroids and returning processed materials to Earth, the TransAstra concept involves moving the asteroid itself to a convenient location where continuous resource extraction becomes practical. </p>
<p>Funding for the study reflects growing government interest in asteroid resources. The U.S. Space Force has provided additional investment to scale the technology, recognizing potential applications for in-space manufacturing and propellant production. As orbital operations expand, the ability to extract materials from near-Earth asteroids could reduce dependence on Earth-launched resources, lowering the cost of sustained space operations. </p>
<p>TransAstra is not alone in pursuing asteroid mining. AstroForge, another U.S.-based company, has raised approximately $55 million toward extracting platinum-group metals from asteroids. The company experienced a spacecraft setback but continues preparing for asteroid landing tests. Karman+ secured $20 million in February 2025 to develop autonomous spacecraft for near-Earth asteroid mining, targeting a demonstration mission in 2027. </p>
<p>The asteroid mining market is projected to grow from $2.49 billion in 2026 to $5.42 billion by 2030, representing a compound annual growth rate of 21.4 percent. This expansion reflects anticipated demand for rare metals and the strategic value of establishing in-space resource extraction capabilities before lunar and Mars ambitions require substantial material support. </p>
<p>Moving a 100-ton asteroid requires careful consideration of momentum and energy. The asteroid&#8217;s orbital velocity around the Sun determines the energy required to alter its trajectory, with even small changes requiring substantial thrust when applied to objects with such great mass. TransAstra&#8217;s approach involves applying gentle continuous force rather than sudden impulse, using solar electric propulsion to gradually modify the asteroid&#8217;s orbit over months or years. </p>
<p>The thermal environment during the capture operation presents unique challenges. Asteroids rotate, presenting changing thermal profiles to the sun as they tumble through space. The inflatable capture bag must maintain structural integrity across temperature extremes that could reach minus 100 degrees Celsius in shadow and positive 100 degrees Celsius in direct sunlight. Materials selection focuses on thermal resilience and resistance to micrometeoroid puncture. </p>
<p>Containment of the asteroid once captured requires the bag to maintain its shape despite the irregular shape of most asteroid surfaces. The inflatable structure must distribute forces evenly across contact points, avoiding concentrated loads that could tear the material. TransAstra&#8217;s design incorporates multiple redundant chambers, allowing the bag to maintain containment even if some sections experience damage. </p>
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		<title>Congress Cancels NASA&#8217;s Mars Sample Return Mission</title>
		<link>https://orbitalhub.com/?p=4482</link>
		<comments>https://orbitalhub.com/?p=4482#respond</comments>
		<pubDate>Fri, 03 Apr 2026 13:00:07 +0000</pubDate>
		<dc:creator>dj</dc:creator>
				<category><![CDATA[Mars Explorers]]></category>
		<category><![CDATA[Robotic Exploration]]></category>
		<category><![CDATA[Mars]]></category>
		<category><![CDATA[Mars Sample Return]]></category>
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<p>The United States Congress effectively terminated NASA&#8217;s Mars Sample Return program in January 2026, redirecting $110 million to a new &#8220;Mars Future Missions&#8221; line item while explicitly stating that the existing program would not receive support. The decision marks one of the most significant shifts in NASA&#8217;s planetary exploration strategy in decades, leaving approximately 30 samples collected by the Perseverance rover stranded on the Martian surface indefinitely. </p>
<p>The cancellation emerged from the Fiscal Year 2026 budget process, where the Trump administration proposed terminating Mars Sample Return due to escalating costs and projected timelines. Estimates placed the total cost at up to $11 billion, with samples potentially not returning until 2040 at the earliest. These figures proved unacceptable to congressional appropriators, who instead passed a compromise spending bill that explicitly excluded support for the existing program. </p>
<p>The Mars Sample Return campaign represented a joint NASA-ESA effort to bring Martian material to Earth for detailed laboratory analysis. Perseverance has been collecting samples since 2021, caching them at strategic locations across Jezero Crater for later retrieval. The original architecture called for a complex sequence of missions: an ascent vehicle to launch the samples into Martian orbit, a transfer spacecraft to capture them, and a return vehicle to bring them to Earth. </p>
<p>The program&#8217;s troubles predated the 2026 cancellation. Independent reviews in 2023 and 2024 criticized the architecture as overly complex and expensive, with the Planetary Science Decadal Survey recommending that NASA seek a more affordable approach. The agency paused architecture work and studied alternatives, but cost estimates remained prohibitively high regardless of the chosen approach. </p>
<p>The decision to cut Mars Sample Return has generated substantial criticism from the scientific community. Researchers note that laboratory analysis of Martian material could address fundamental questions about Mars&#8217;s past habitability and whether life ever existed on the planet. The samples collected by Perseverance include formations that show potential biosignatures, making their analysis particularly compelling. </p>
<p>ESA, which had committed significant resources to the program, is now reassessing its role in Mars exploration. The European agency&#8217;s contributions included the Earth Return Orbiter, which would have captured the sample container in Martian orbit and returned it to Earth. With the NASA program cancelled, ESA faces decisions about whether to pursue independent or alternative approaches. </p>
<p>The $110 million redirected to &#8220;Mars Future Missions&#8221; could support technology development for future sample retrieval attempts, including work on Mars landing systems and sample containment technologies. However, no specific mission has been proposed, and the funding level represents a fraction of what the full program would have required. </p>
<p>The cancellation leaves China potentially positioned as the first nation to return Martian samples to Earth. That country&#8217;s Tianwen-1 mission included an orbiter and lander, though not a sample return component. However, Chinese scientists have discussed sample return ambitions, and the U.S. decision may accelerate those plans. </p>
<p>For now, the samples collected by Perseverance remain where they were deposited, scattered across the floor of Jezero Crater. The rover continues operating, collecting additional samples and conducting scientific investigations, though the ultimate purpose of those samples remains uncertain. Future missions may retrieve them, or they may remain as artifacts of a program that came close to achieving something unprecedented before falling to budget realities. </p>
<p>Returning material from Mars presents one of the most challenging problems in spaceflight. The planet&#8217;s gravitational well requires substantial energy to escape, with a velocity delta of approximately 5.6 kilometers per second needed to reach low Mars orbit. This is comparable to the total velocity change required to reach Mars from Earth in the first place. </p>
<p>The Mars Sample Return architecture addressed this challenge through multiple vehicles. A Mars Ascent Vehicle would launch from the surface carrying the sample container, achieving orbital insertion without relying on atmospheric drag for deceleration. An Earth Return Orbiter would then capture this container in orbit and perform the much larger maneuver needed to transfer to an Earth-return trajectory. </p>
<p>The thermal protection required for Earth reentry adds complexity. The sample container would strike Earth&#8217;s atmosphere at velocities approaching 12 kilometers per second, generating temperatures exceeding 2,000 degrees Celsius. The capsule design incorporates heat shields similar to those used on Apollo return vehicles, sized appropriately for the mass and velocity of the return trajectory. </p>
<p>Containment represents a critical requirement given the possibility of Martian material posing biological hazards. The samples must remain sealed throughout reentry and landing, with containment verified before any potential exposure to Earth&#8217;s biosphere. This requirement adds mass and complexity to the return vehicle, as the sealed container must survive the entire descent and recovery process intact. </p>
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		<title>NASA&#8217;s Perseverance Rover Achieves GPS-Like Autonomy on Mars</title>
		<link>https://orbitalhub.com/?p=4480</link>
		<comments>https://orbitalhub.com/?p=4480#respond</comments>
		<pubDate>Thu, 02 Apr 2026 13:00:27 +0000</pubDate>
		<dc:creator>dj</dc:creator>
				<category><![CDATA[Mars Explorers]]></category>
		<category><![CDATA[Robotic Exploration]]></category>
		<category><![CDATA[MSSS]]></category>
		<category><![CDATA[Perseverance]]></category>
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<p>NASA&#8217;s Perseverance rover has entered a new era of autonomous exploration on Mars, with a system debuted in February 2026 that gives the vehicle GPS-like self-localization capabilities without requiring input from Earth. The Mars Global Localization system, first used in operations on February 2 and again on February 16, represents a fundamental shift in how the rover navigates the Martian surface, enabling longer drives with greater precision than ever before. </p>
<p>The system works by comparing navigation camera panoramas to stored orbital maps from the Mars Reconnaissance Orbiter. This matching process takes approximately two minutes and achieves positioning accuracy of 10 inches (25 centimeters), a dramatic improvement over previous visual odometry methods that accumulated errors potentially exceeding 100 feet over long drives. Previously, uncertainty about the rover&#8217;s precise position limited how far controllers would allow it to drive in a single sol, or Martian day. </p>
<p>The Mars Global Localization algorithm runs on hardware repurposed from the Ingenuity helicopter&#8217;s base station. This processor, roughly 100 times faster than the rover&#8217;s main computers and based on technology from the mid-2010s smartphone era, proved adequate for the computationally intensive matching process. The algorithm includes sanity checks to ensure reliability, preventing the rover from accepting obviously incorrect position estimates. </p>
<p>This development builds on earlier autonomy milestones. In December 2025, Perseverance completed its first fully AI-planned drives, with ground-based generative AI analyzing HiRISE orbital images and elevation data to generate safe waypoint paths. The rover drove 689 feet on December 8 and 807 feet on December 10, autonomously following routes that avoided boulders, sand ripples, bedrock, and outcrops identified by the AI system. </p>
<p>The combination of AI planning and autonomous localization has pushed the rover&#8217;s independence to approximately 90 percent of its travels without human input. This represents a fundamental shift in mission operations, where controllers no longer need to micromanage every aspect of each drive. The rover can receive high-level objectives and execute them with minimal oversight, dramatically increasing scientific productivity. </p>
<p>Perseverance continues its exploration of Jezero Crater, having traveled over 30 kilometers since landing on February 18, 2021. The vehicle has collected 24 rock and regolith samples, along with one air sample, for potential future return to Earth. Notably, the &#8220;Sapphire Canyon&#8221; sample collected from the Cheyava Falls rock in 2024 shows potential biosignatures that were validated in a September 2025 Nature paper, making it one of the most significant samples collected during the mission. </p>
<p>The autonomy advances have particular importance for future Mars missions. With the Mars Sample Return program effectively cancelled by Congress in January 2026, the samples collected by Perseverance will remain on the Martian surface indefinitely unless a new retrieval mission emerges. However, the technologies demonstrated by the rover pave the way for more ambitious autonomous explorers capable of operating independently across greater distances. </p>
<p>Navigating on Mars presents unique challenges absent in terrestrial robotics. The planet lacks any global navigation satellite system, meaning rovers cannot rely on GPS or GLONASS for positioning. Communication delays between Earth and Mars range from 4 to 24 minutes one way, making real-time remote control impossible and requiring the rover to make decisions autonomously. </p>
<p>Previous rovers used visual odometry, comparing successive images to estimate motion between positions. While effective for short distances, this method accumulates error over time as small estimation mistakes compound. After driving hundreds of meters, the rover&#8217;s position estimate might be significantly off, requiring ground controllers to carefully verify progress through orbital imagery. </p>
<p>The Mars Global Localization system sidesteps this problem by leveraging the extensive imaging data already collected by orbital missions. The Mars Reconnaissance Orbiter&#8217;s HiRISE camera has captured high-resolution images covering much of the Martian surface, creating a detailed map against which the rover can compare its own images. This approach works similarly to how facial recognition systems match images against databases. </p>
<p>The computational requirements for real-time image matching are substantial, requiring significant processing power to compare feature-rich navcam panoramas against large orbital map databases. The repurposed Ingenuity processor proved adequate for this task, demonstrating how hardware originally designed for one purpose can find new life in spacecraft applications. </p>
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		<title>Building on the Moon: Komatsu and the Rise of Lunar Construction</title>
		<link>https://orbitalhub.com/?p=4486</link>
		<comments>https://orbitalhub.com/?p=4486#respond</comments>
		<pubDate>Wed, 01 Apr 2026 13:10:36 +0000</pubDate>
		<dc:creator>dj</dc:creator>
				<category><![CDATA[Lunar Explorers]]></category>
		<category><![CDATA[Videos]]></category>
		<category><![CDATA[Komatsu]]></category>
		<guid isPermaLink="false">https://orbitalhub.com/?p=4486</guid>

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<p>Every era of exploration begins with a journey, but it is defined by what comes after. Reaching a new world is only the first step. Staying there—living, working, building—requires something far more complex. It requires infrastructure. Roads must be laid, foundations must be prepared, materials must be moved and shaped. On Earth, these tasks are so commonplace that they are almost invisible, carried out by machines that have become extensions of human intent. On the Moon, however, they represent one of the greatest engineering challenges humanity has ever faced. </p>
<p>It is within this context that Komatsu has begun charting a new course. Known for its expertise in heavy machinery on Earth, the company is now extending its capabilities into an environment where gravity is weaker, the vacuum is absolute, and the terrain is both unforgiving and unknown. Through its role in Japan’s Space Construction Innovation Project—part of the broader Stardust Program led by Japan’s Ministry of Land, Infrastructure, Transport and Tourism and the Ministry of Education, Culture, Sports, Science and Technology—Komatsu is working toward a future where construction is not limited to Earth, but becomes a fundamental part of human presence on the Moon. </p>
<p>The vision is ambitious: autonomous construction systems capable of building infrastructure for long-term habitation on the lunar surface. The timeline is equally bold, with key milestones targeted for the early 2030s. Yet beneath this vision lies a deeper story—one that connects centuries of engineering knowledge with the unique demands of operating beyond our home planet. </p>
<p>To understand the challenge, one must first consider the environment. The Moon is not simply a smaller version of Earth. Its surface is covered in regolith, a fine, abrasive dust created by billions of years of micrometeorite impacts. This material behaves differently from terrestrial soil. It lacks moisture, cohesion, and organic content, making it difficult to compact and unpredictable under load. At the same time, the Moon’s gravity is only one-sixth that of Earth, altering how machines interact with the ground. A construction vehicle designed for Earth relies on its weight to maintain traction and stability. On the Moon, that same vehicle would struggle to maintain contact with the surface, risking slippage or even unintended lift during operation. </p>
<p>These differences force engineers to rethink the fundamentals of construction machinery. Traditional designs must be adapted or entirely reimagined. Tracks and wheels must be optimized for low-gravity conditions, ensuring sufficient traction without excessive wear. Structural components must be lightweight yet strong, capable of withstanding the stresses of operation while minimizing the cost of transport from Earth. Every kilogram matters when launching equipment into space. </p>
<p>The absence of an atmosphere introduces additional complexities. On Earth, air plays a role in cooling engines, dissipating heat, and supporting combustion. On the Moon, there is no air to carry heat away, requiring alternative thermal management systems such as radiators and conductive pathways. Dust becomes an even greater hazard, as it can infiltrate mechanical joints, degrade seals, and interfere with sensors. Komatsu’s engineers must design systems that can operate reliably in this harsh environment, where maintenance opportunities are limited and failures can have significant consequences. </p>
<p>Autonomy lies at the heart of the project. Unlike construction sites on Earth, where human operators control machinery directly, lunar construction will rely heavily on autonomous or semi-autonomous systems. Communication delays between Earth and the Moon, though relatively short compared to interplanetary distances, still limit the feasibility of real-time control for complex tasks. Machines must be capable of perceiving their environment, making decisions, and executing actions with minimal human intervention. </p>
<p>This requires the integration of advanced sensing technologies, including cameras, lidar, and possibly radar systems, to map the terrain and detect obstacles. Machine learning algorithms and control systems must interpret this data, enabling the machinery to perform tasks such as excavation, grading, and material transport with precision. In this sense, lunar construction machines become more than tools; they become intelligent agents, capable of adapting to conditions that may differ from those anticipated during design. </p>
<p>Energy is another critical consideration. On the Moon, power is likely to be supplied by solar arrays, particularly in regions near the poles where sunlight is more consistent. Construction machinery must operate within the constraints of available power, requiring efficient electric drivetrains and energy management systems. Unlike diesel-powered equipment on Earth, lunar machines will rely on batteries or other forms of energy storage, carefully balancing performance with endurance. </p>
<p>The science behind lunar construction extends beyond machinery into the materials themselves. Building a sustainable presence on the Moon requires the use of local resources, a concept known as in-situ resource utilization. Regolith can be processed into building materials, potentially through sintering or melting techniques that fuse particles together to create solid structures. By using the Moon’s own materials, the need to transport large quantities of construction supplies from Earth can be dramatically reduced. </p>
<p>Komatsu’s role in this ecosystem is to bridge the gap between concept and implementation. Drawing on decades of experience in terrestrial construction, the company is adapting its knowledge to a new domain, where familiar principles must be applied in unfamiliar ways. The process is iterative, involving simulation, prototyping, and testing under conditions that approximate the lunar environment as closely as possible. </p>
<p>The significance of this work extends far beyond a single project. It represents a shift in how humanity approaches space exploration. For much of history, missions to other worlds have been temporary, lasting only as long as supplies and systems allowed. The development of lunar construction capabilities marks the transition toward permanence. It is the difference between visiting a place and building a presence there. </p>
<p>In the broader narrative of space exploration, Komatsu’s efforts align with a growing recognition that the future of humanity in space will depend not only on rockets and spacecraft, but on the ability to create infrastructure beyond Earth. Habitats must be constructed, landing pads must be prepared, and resources must be extracted and processed. These are the foundations of a sustained presence, and they require a level of engineering sophistication that goes beyond traditional aerospace design. </p>
<p>As the early 2030s approach, the work being carried out today will begin to take shape on the lunar surface. Machines designed and tested on Earth will operate in an environment where every action carries both risk and opportunity. They will carve into regolith, move materials, and lay the groundwork for human habitation. </p>
<p>Video credit: Komatsu</p>
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		<title>Amazon Accelerates Leo Constellation Deployment to Meet Regulatory Deadline</title>
		<link>https://orbitalhub.com/?p=4478</link>
		<comments>https://orbitalhub.com/?p=4478#respond</comments>
		<pubDate>Wed, 01 Apr 2026 13:00:32 +0000</pubDate>
		<dc:creator>dj</dc:creator>
				<category><![CDATA[Spacecraft Design]]></category>
		<category><![CDATA[Amazon]]></category>
		<category><![CDATA[Amazon Leo]]></category>
		<category><![CDATA[Kuiper Broadband]]></category>
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<p>Amazon announced on March 23, 2026, that it plans to double the annual launch rate for its Project Kuiper low Earth orbit broadband constellation to more than 20 missions, with the acceleration driven by pressure from a key Federal Communications Commission milestone requiring deployment of half its planned 3,232 first-generation satellites by July 30, 2026. </p>
<p>The company stated it is on pace to complete 11 launches in the first year of deployment since kicking off the campaign in April 2025, with three more missions slated in the coming weeks. As of mid-March, Amazon reported six fully stacked payloads at its satellite processing facility in Florida, representing more than 200 satellites in total, with another payload being prepared in French Guiana. </p>
<p>While 212 Amazon Leo satellites have been deployed so far, hundreds more await launch as the company seeks relief from the FCC deadline. Amazon is asking the regulatory body to extend the deadline by two years or waive it entirely, arguing that launch vehicle availability and other constraints have prevented the originally contemplated deployment pace. </p>
<p>Amazon has booked more than 100 launches for the constellation, including missions with United Launch Alliance, Arianespace, Blue Origin, and SpaceX. The company noted that Ariane 64, New Glenn, and Vulcan are expected to carry increasing numbers of Amazon Leo satellites as vehicle performance improves. </p>
<p>The next major milestone is a ULA Atlas 5 mission on March 29, set to carry 29 Amazon Leo satellites, up from the usual 27, following an engine upgrade enabling its heaviest payload to date. Another Atlas 5 is due in April, along with a second Ariane 64 launch for the constellation. The first Ariane 64 mission last month was Arianespace&#8217;s first using the rocket&#8217;s more powerful four-booster variant and carried 32 satellites. </p>
<p>According to Amazon, future upgrades will enable Ariane 64 to support even larger payloads. Most launches for the constellation this year are scheduled to use heavy-lift rockets, including Blue Origin&#8217;s New Glenn, expected to carry about 48 satellites initially, and ULA&#8217;s Vulcan Centaur, with capacity for around 40 from the start. </p>
<p>The company has invested more than $200 million in upgrading ULA facilities at Cape Canaveral to help increase launch cadence and improve turnaround times. These upgrades support the accelerated deployment that Amazon says is necessary to meet its contractual obligations and service commitments. </p>
<p>Amazon can build as many as 30 satellites per week from its facility in Kirkland, Washington, though this rate has slowed to reflect launch vehicle readiness and availability. The manufacturing capacity exists; the challenge lies in getting satellites to orbit on the planned schedule. </p>
<p>The FCC milestone requiring deployment of 1,616 satellites by July 30 reflects the commission&#8217;s interest in ensuring that spectrum allocated for broadband constellations is actually used. Waiving or extending the deadline would require Amazon to demonstrate that circumstances beyond its control have prevented compliance, and that the public interest would be served by granting relief. </p>
<p>Building and deploying a constellation of thousands of satellites requires fundamentally different economics than traditional satellite programs. The per-satellite cost must be low enough that total constellation expense remains manageable, while launch costs must be sufficiently controlled to avoid having transportation dominate the budget. </p>
<p>Amazon has pursued vertical integration as a primary strategy, manufacturing satellites in-house at its Kirkland facility rather than purchasing from traditional satellite builders. This approach provides greater control over costs and schedule but requires substantial capital investment in manufacturing infrastructure and expertise. </p>
<p>The launch procurement strategy spreads risk across multiple providers, ensuring that delays from any single vehicle do not halt the entire constellation deployment. However, this also means that Amazon must coordinate across different launch systems, each with its own interfaces, procedures, and performance characteristics. </p>
<p>The FCC deadline applies to the first-generation constellation of 3,232 satellites, but Amazon has indicated plans for additional satellites beyond that initial deployment. The regulatory framework requires operators to demonstrate meaningful deployment within specific timeframes to maintain spectrum rights, creating incentives to launch satellites even before they can be fully utilized in the network. </p>
<p>Satellite life expectancy in LEO typically ranges from three to seven years, depending on orbital altitude and design. This limited operational lifetime means that constellation operators must continuously launch replacement satellites to maintain service levels, adding ongoing launch costs to the initial deployment expense. </p>
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		<title>Telesat Prepares Lightspeed Constellation for Defense and Commercial Roles</title>
		<link>https://orbitalhub.com/?p=4474</link>
		<comments>https://orbitalhub.com/?p=4474#respond</comments>
		<pubDate>Tue, 31 Mar 2026 13:00:03 +0000</pubDate>
		<dc:creator>dj</dc:creator>
				<category><![CDATA[Earth Science]]></category>
		<category><![CDATA[Spacecraft Design]]></category>
		<category><![CDATA[Telesat]]></category>
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<p>Telesat is positioning its Lightspeed low Earth orbit constellation as a critical component of defense communications networks, with a planned laser communications demonstration in 2027 that could validate the system for high-demand applications including missile defense. The Canadian satellite operator announced the strategy during the Satellite 2026 conference in Washington, D.C., highlighting changes to the system design aimed at military compatibility. </p>
<p>The company plans to launch the first two Lightspeed satellites in December 2026, with a laser communications relay demonstration scheduled for 2027 under a $30 million NASA contract awarded in 2022. The test will simulate a data relay scenario in orbit: one satellite will act as a mission spacecraft, the other as a relay node. A subsequent phase will involve a Planet Labs imaging satellite equipped with an optical terminal, which will send data through the Lightspeed system to a ground station. </p>
<p>Chuck Cynamon, president of Telesat Government Solutions, emphasized that the demonstration represents a proof point for the Pentagon&#8217;s growing interest in space-based data networks. &#8220;There&#8217;s a demand for hybrid architectures,&#8221; Cynamon stated, pointing to the Space Force&#8217;s development of what it calls a &#8220;space data network&#8221; intended to connect satellites, sensors, and weapons into a unified real-time architecture. </p>
<p>The Golden Dome missile defense initiative would depend on such networks as its core transport layer, routing data between sensors, command systems, and interceptors in near real time. Gen. Michael Guetlein, who leads Golden Dome, has indicated that funding for the space data network is increasing, with Cynamon noting that &#8220;there&#8217;s probably no limit on how much capability is going to be needed on orbit from a space data network.&#8221; </p>
<p>The company has modified its system design to align with military requirements, including adding military Ka-band frequencies aligned with the Pentagon&#8217;s existing wideband satcom systems. Each of the planned 198 Lightspeed satellites will carry four optical terminals supplied by Tesat-Spacecom, enabling high-speed links between spacecraft that can move large volumes of information with low latency while reducing exposure to jamming or interception. </p>
<p>The capacity pool model Telesat intends to offer the government would allow access to Lightspeed&#8217;s bandwidth and potentially optical connections without owning satellites. &#8220;We could also offer a pool of optical connections on a daily, weekly or monthly basis,&#8221; Cynamon explained, reflecting a broader shift toward hybrid architectures that blend military and commercial infrastructure. </p>
<p>Telesat expects to begin commercial service in 2028 after deploying the first 156 satellites, with launches contracted to SpaceX in batches of roughly 15 spacecraft. The company enters a competitive field dominated by SpaceX&#8217;s Starlink and Starshield, along with emerging systems such as Amazon LEO. Both competitors are pursuing defense business and deploying optical inter-satellite links. </p>
<p>One emerging demand driver is the concept of orbital data centers, which Cynamon noted could further increase pressure on satellite networks to expand capacity and move data more quickly between space and the ground. &#8220;I think it&#8217;s going to put pressure on the ability to have large pipes and land data quickly on the ground,&#8221; he observed. </p>
<p>Optical communications between satellites operate at frequencies far higher than traditional radio-frequency links, typically using near-infrared wavelengths around 1550 nanometers. This frequency choice offers several advantages for space-based communications, including narrower beam divergence that enables higher data rates while reducing interference between neighboring links. </p>
<p>The fundamental principle involves modulating a laser beam with data and directing it precisely at a receiving terminal, requiring extremely precise pointing and tracking systems. The transmitting terminal must aim its beam with accuracy measured in microradians, roughly equivalent to aligning two lasers pointed from opposite ends of a football field and having them meet at the 50-yard line. </p>
<p>Data rates for optical links can reach 10 gigabits per second or higher, compared to typical radio-frequency satellite links measured in megabits per second. This capacity advantage becomes particularly significant for applications involving large data volumes, such as high-resolution imagery or video from Earth observation satellites. </p>
<p>The laser links used in satellite constellations employ coherent detection, where the receiving terminal mixes the incoming optical signal with a locally generated laser to extract the data. This technique provides sensitivity improvements over direct detection methods, enabling links across distances of thousands of kilometers with minimal transmit power. </p>
<p>Atmospheric effects present challenges for optical links that radio frequencies avoid, including scattering by molecules and aerosols, absorption by water vapor, and turbulence that can cause beam wander and scintillation. For inter-satellite links above Earth&#8217;s atmosphere, these effects largely disappear, making optical communications most attractive for links between spacecraft rather than from space to ground. </p>
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		<title>MoonFall: Drones at the Edge of Eternal Shadow</title>
		<link>https://orbitalhub.com/?p=4476</link>
		<comments>https://orbitalhub.com/?p=4476#respond</comments>
		<pubDate>Mon, 30 Mar 2026 13:10:49 +0000</pubDate>
		<dc:creator>dj</dc:creator>
				<category><![CDATA[Lunar Explorers]]></category>
		<category><![CDATA[Robotic Exploration]]></category>
		<category><![CDATA[Videos]]></category>
		<category><![CDATA[MoonFall]]></category>
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<p>At the southernmost reaches of the Moon, where sunlight skims the horizon and shadows stretch for kilometers, lies one of the most intriguing frontiers in space exploration. The lunar South Pole is a place of extremes—regions of near-eternal light sit beside craters that have not seen the Sun for billions of years. Within those permanently shadowed regions, scientists believe water ice may be preserved, locked away in darkness and cold. It is here, in this landscape of contrast and possibility, that NASA’s MoonFall mission begins its story. </p>
<p>MoonFall is not a mission of astronauts, at least not at first. It is a mission of scouts—four highly mobile drones that will descend to the lunar surface ahead of human explorers, mapping terrain, probing shadows, and revealing secrets hidden in the coldest corners of the Moon. Built on the legacy of the Ingenuity Mars Helicopter, these drones represent a new class of planetary explorers: small, agile, and capable of reaching places that traditional rovers cannot. </p>
<p>The idea behind MoonFall is as much about preparation as it is about discovery. NASA’s Artemis program aims to return humans to the Moon, and the South Pole has been chosen as a primary destination because of its scientific potential and resource availability. Yet the terrain is treacherous. Craters, steep slopes, and deep shadows create an environment that is difficult to navigate and poorly understood. Before astronauts set foot there, the landscape must be mapped in detail, hazards identified, and resources confirmed. MoonFall is designed to do exactly that. </p>
<p>The mission begins high above the lunar surface. As the carrier spacecraft descends toward the South Pole, the four drones are released, each entering its own controlled descent. Unlike traditional landers that touch down as a single unit, MoonFall disperses its explorers across a wider area, increasing coverage and redundancy. Each drone lands independently, unfolding its systems and preparing for a series of flights that will take place over the course of a lunar day—approximately fourteen Earth days of continuous sunlight. </p>
<p>The engineering challenge behind these drones is profound. Flying on the Moon is fundamentally different from flying on Mars or Earth. The Moon has no atmosphere to provide lift. There is no air for rotors to push against, no aerodynamic surfaces to generate lift. Instead, MoonFall drones rely entirely on propulsive flight, using thrusters to lift off, maneuver, and land. In this sense, they behave more like miniature spacecraft than traditional aircraft. </p>
<p>This propulsion-based approach introduces a new set of constraints. Every flight requires careful management of fuel, thrust, and stability. The drones must balance their mass and propulsion systems precisely to achieve controlled motion in a vacuum. Guidance, navigation, and control systems must operate with extreme precision, using onboard sensors to track position relative to the lunar surface. Without atmospheric drag, even small errors can lead to significant deviations over time. </p>
<p>The heritage of Ingenuity plays a crucial role here, not in its aerodynamic design, but in its autonomy. Ingenuity demonstrated that a small, lightweight vehicle could operate independently on another world, making real-time decisions about navigation and flight. MoonFall builds on this capability, extending it into a more demanding environment. Each drone must be able to plan and execute its own flights, avoid hazards, and adapt to changing conditions without direct human control. Communication delays between Earth and the Moon are shorter than those to Mars, but autonomy remains essential for efficient operations. </p>
<p>The scientific instruments aboard the drones are designed to turn mobility into insight. High-definition optical cameras will capture detailed images of the terrain, revealing surface features at resolutions far beyond what orbital instruments can provide. These images will help scientists understand the geological history of the region, identify safe landing sites, and map potential resources. </p>
<p>Perhaps the most compelling targets are the permanently shadowed regions, or PSRs. These areas, hidden from sunlight for billions of years, are among the coldest places in the Solar System. Temperatures can drop below minus 200 degrees Celsius, creating conditions where volatile substances like water ice can remain stable over geological timescales. Detecting and characterizing this ice is a key objective of the Artemis program, as it could provide a source of water, oxygen, and even rocket fuel for future missions. </p>
<p>Reaching these shadowed regions is no trivial task. Rovers struggle to navigate steep crater walls and operate in darkness. MoonFall drones, however, can approach from above, descending into these regions briefly to collect data before returning to sunlight. This ability to hop across the landscape, covering up to 50 kilometers over multiple flights, transforms how exploration can be conducted. Instead of being confined to a single path, the drones can sample multiple sites, building a more comprehensive picture of the environment. </p>
<p>The physics of operating in such extreme conditions adds another layer of complexity. Thermal management becomes critical, as the drones must endure rapid temperature changes between sunlit and shadowed areas. Power systems, likely based on solar energy and onboard batteries, must be carefully managed to sustain operations throughout the lunar day. Dust, a persistent challenge on the Moon, can interfere with sensors and mechanical components, requiring robust design and mitigation strategies. </p>
<p>Yet within these challenges lies the mission’s promise. MoonFall represents a shift in how we explore other worlds. Instead of relying solely on large, complex spacecraft, it embraces distributed systems—multiple smaller vehicles working together to achieve a common goal. This approach increases resilience, as the loss of a single drone does not end the mission, and enhances coverage, allowing more ground to be explored in less time. </p>
<p>As the drones move across the lunar surface, each flight becomes part of a larger narrative. Images stream back to Earth, revealing landscapes that have never been seen in detail. Data accumulates, mapping the distribution of ice, the structure of the terrain, and the conditions that future astronauts will face. Slowly, the unknown becomes known. </p>
<p>In the quiet arcs of these propulsive flights, one can see the future of exploration taking shape. The Moon is no longer just a destination; it is becoming a place of preparation, a proving ground for technologies and strategies that will one day be applied to Mars and beyond. MoonFall’s drones are not just scouts for Artemis—they are prototypes for a new generation of explorers that can navigate the most challenging environments in the Solar System. </p>
<p>When astronauts finally arrive at the lunar South Pole, they will not be stepping into the unknown. They will be following paths first traced by machines that flew through shadow and light, mapping a world that has waited billions of years to be explored. </p>
<p>Video credit: NASA Jet Propulsion Laboratory</p>
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		<title>NASA Shifts Focus from Lunar Gateway to Surface Base</title>
		<link>https://orbitalhub.com/?p=4472</link>
		<comments>https://orbitalhub.com/?p=4472#respond</comments>
		<pubDate>Mon, 30 Mar 2026 13:00:00 +0000</pubDate>
		<dc:creator>dj</dc:creator>
				<category><![CDATA[Lunar Explorers]]></category>
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<p>NASA announced a fundamental shift in its lunar architecture on March 24, 2026, halting development of the lunar Gateway in favor of building a permanent base on the Moon&#8217;s surface. The decision marks the most significant restructuring of the Artemis program since its inception, redirecting billions of dollars and years of engineering work toward a different vision of sustained human presence beyond Earth orbit. </p>
<p>During an event at NASA Headquarters titled &#8220;Ignition,&#8221; agency officials outlined plans to spend $20 billion over seven years developing a lunar base at the Moon&#8217;s south pole. Program executive Carlos Garcia-Galan described the approach as &#8220;building humanity&#8217;s first deep space outpost,&#8221; emphasizing that surface operations take priority over orbital infrastructure that had been in development for nearly a decade. </p>
<p>The lunar base will proceed in three phases. Phase 1, spanning 2026 to 2028, focuses on establishing reliable access to the lunar surface through increased landing missions via the Commercial Lunar Payload Services program. This phase prioritizes developing enabling technologies and gathering &#8220;ground truth&#8221; data about potential base locations near permanently shadowed craters where water ice deposits may exist. Phase 2, from 2029 through 2031, begins constructing the actual base infrastructure including communications, navigation, power systems, and supporting two crewed missions per year. Phase 3, beginning in 2032, enables what Garcia-Galan described as &#8220;long distance and long duration human exploration&#8221; with routine logistics deliveries and the first uncrewed cargo return missions from the lunar surface. </p>
<p>The financial commitment breaks down to approximately $10 billion each for Phases 1 and 2, with Phase 3 requiring an additional $10 billion or more extending through at least 2036. The funding represents a substantial reallocation from the Gateway program, which had received $2.6 billion in a budget reconciliation bill passed last July that defined the facility in law as &#8220;an outpost in orbit around the Moon.&#8221; </p>
<p>Gateway development will pause in its current form, though NASA will work to repurpose systems already under development, including the Power and Propulsion Element and the Habitation and Logistics Outpost, for use in the lunar base or other programs. Administrator Jared Isaacman stated that shifting workforce priorities to the surface &#8220;does not preclude revisiting the orbital outpost in the future,&#8221; leaving the door open for a potential Gateway return if circumstances change. </p>
<p>The decision reflects a fundamental reevaluation of what infrastructure actually enables human exploration. When NASA began developing the Gateway several years ago, the orbital facility was intended to support crewed landings at the lunar south pole, providing a staging point for descents to the surface. However, agency officials concluded that while the Gateway remains &#8220;relevant for future exploration goals, it is not required to accomplish our primary objectives&#8221; of establishing sustained surface operations. </p>
<p>The lunar base will incorporate new capabilities beyond existing programs. One example is MoonFall, a drone designed to hop between locations on the lunar surface, building on the heritage of Ingenuity, the small helicopter that operated on Mars. &#8220;We&#8217;re going to take everything that we learned from Ingenuity&#8217;s systems, the avionics, all of that, to build this,&#8221; Garcia-Galan noted. </p>
<p>The Lunar Terrain Vehicle program will also see significant changes. NASA concluded that the current approach would not deliver a crew-capable rover until 2030, which was deemed too slow. The agency is instead issuing a draft request for proposals for simplified rovers that could be developed more quickly but upgraded later as requirements evolve. </p>
<p>Any shift from the Gateway to a lunar base requires congressional approval, as current law defines the Gateway project in specific terms. NASA officials acknowledged this constraint but emphasized the urgency of the decision, arguing that the current trajectory would not achieve the agency&#8217;s stated goal of sustained human presence on the Moon. </p>
<p>Building a permanent base on the Moon presents engineering challenges fundamentally different from developing orbital infrastructure. The lunar surface experiences extreme temperature variations, with temperatures swinging from approximately 127 degrees Celsius during daylight to minus 173 degrees Celsius at night in equatorial regions. At the south pole, where NASA plans to locate the base, temperatures remain more stable in permanently shadowed regions but present other challenges related to lighting and access to water ice. </p>
<p>Power generation on the lunar surface relies primarily on solar energy, though the south pole location provides unique advantages. Within certain craters, sunlight never directly illuminates the surface, but rim regions receive nearly continuous illumination during the lunar day. This enables solar panels to generate power during approximately 80% of each Earth month, with the remaining period requiring stored energy from batteries or alternative sources. </p>
<p>Life support systems for a lunar base must recycle resources far more efficiently than the International Space Station, which receives regular resupply missions. NASA&#8217;s experience with the Environmental Control and Life Support System on the ISS has informed designs for closed-loop systems that recover water from atmospheric humidity, urine processing, and carbon dioxide removal using molecular sieves and regenerative systems. </p>
<p>Communications with Earth from the lunar surface involves a one-way light time of approximately 1.3 seconds, enabling near-real-time voice and data communication but requiring different protocols than ISS operations. Relay satellites in lunar orbit or at Earth-Sun Lagrange points could provide additional connectivity options and redundancy. </p>
<p>The regolith, the layer of loose material covering the lunar surface, poses both challenges and opportunities. Its abrasive properties require careful consideration for equipment operation, but it also contains resources that could support future in-situ resource utilization, including oxygen extracted from silicon oxide and metals from iron oxide. NASA plans to investigate these possibilities during Phase 1 as part of the base site characterization effort. </p>
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		<title>Axiom Space Secures $350 Million as Commercial Station Construction Advances</title>
		<link>https://orbitalhub.com/?p=4463</link>
		<comments>https://orbitalhub.com/?p=4463#respond</comments>
		<pubDate>Sat, 28 Mar 2026 13:00:43 +0000</pubDate>
		<dc:creator>dj</dc:creator>
				<category><![CDATA[International Space Station]]></category>
		<category><![CDATA[Spacecraft Design]]></category>
		<category><![CDATA[AXIOM]]></category>
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<p>Axiom Space has closed a $350 million financing round in February 2026, accelerating development of what could become the world&#8217;s first commercial space station. The Houston-based company is building modular habitats designed to attach to the International Space Station before eventually separating to form a free-flying orbital facility. The funding provides critical capital as the company works toward launching its first module in 2027, pending continued progress on hardware development and NASA approvals. </p>
<p>The company&#8217;s architecture begins with the Payload Power Thermal Module, the foundational element that will connect to the ISS and provide infrastructure for research and payload operations. Subsequent modules will expand the station&#8217;s capabilities, adding crew quarters, research facilities, and an airlock for spacewalk operations. The station will initially rely on SpaceX Crew Dragon vehicles for crew transportation, with Axiom&#8217;s own AxEMU spacesuits providing capabilities for extravehicular activities. </p>
<p>Axiom has now completed NASA&#8217;s preliminary and critical design reviews, demonstrating that the proposed architecture meets agency requirements for safety and performance. Thales Alenia Space, the company&#8217;s primary manufacturing partner, is producing primary structures at facilities in Europe and the United States. The first flight hardware pieces have arrived in Houston for final integration, though the company still faces substantial work before the modules are ready for launch. </p>
<p>The commercial station concept addresses a critical transition in human spaceflight. The International Space Station, operated continuously since November 2000, faces an uncertain future as participating agencies evaluate options for continued operations beyond 2030. NASA has expressed support for commercial stations as successors to the ISS, believing that commercial operators can provide orbital research capabilities at lower cost than government-operated facilities. Axiom&#8217;s station represents the leading effort to make that vision a reality. </p>
<p>The company&#8217;s approach emphasizes research and manufacturing capabilities that could benefit from microgravity conditions. Pharmaceutical development, advanced materials processing, and biological research all show promise for improved outcomes when conducted in orbit. Axiom has already demonstrated interest through its private astronaut missions to the ISS, including the Ax-5 mission scheduled for January 2027 that will provide additional experience before the company&#8217;s own station becomes operational. </p>
<p>Designing space habitats that attach to existing infrastructure requires careful consideration of mechanical interfaces, power transfer, and data connectivity. The ISS provides power through solar arrays and thermal control through external radiators, but these systems were not designed to support significant additional loads. Axiom&#8217;s modules must integrate with existing systems without compromising station operations or crew safety, requiring extensive analysis and testing to verify compatibility. </p>
<p>The station&#8217;s expandable design allows for incremental capability growth as demand develops. Initial modules provide basic research and habitation space, with later additions offering specialized facilities for manufacturing or observatory operations. This approach mirrors how the ISS itself grew from a modest facility into a massive research complex over more than two decades of continuous assembly. </p>
<p>Power generation and thermal control present particular challenges for the larger station configuration. As modules are added, power requirements increase proportionally, necessitating expanded solar array capacity and more sophisticated thermal management. The station will need to dissipate heat generated by scientific equipment and life support systems while maintaining comfortable temperatures for crew members. </p>
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		<title>Starlink Constellation Crosses 10,000 Satellite Milestone</title>
		<link>https://orbitalhub.com/?p=4460</link>
		<comments>https://orbitalhub.com/?p=4460#respond</comments>
		<pubDate>Fri, 27 Mar 2026 13:00:40 +0000</pubDate>
		<dc:creator>dj</dc:creator>
				<category><![CDATA[Space Exploration]]></category>
		<category><![CDATA[Spacecraft Design]]></category>
		<category><![CDATA[Starlink]]></category>
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<p>SpaceX achieved a significant milestone on March 16, 2026, when the Starlink constellation reached 10,000 satellites in orbit. The achievement marks another step in the company&#8217;s ambitious plan to provide global broadband internet coverage from low Earth orbit, fundamentally altering both the satellite communications industry and the orbital environment itself. The rapid deployment, accomplished in just over six years since the first operational satellites launched, represents an unprecedented rate of satellite construction and launch activity. </p>
<p>The Starlink network provides internet service to customers worldwide, with particular impact in remote and underserved regions where traditional infrastructure remains impractical. Subscribers use a small satellite dish to connect to passing satellites, receiving data directly from space rather than relying on undersea cables or terrestrial networks. The service has gained particular relevance following natural disasters that destroy ground-based infrastructure, providing emergency connectivity when cellular towers and power grids fail. </p>
<p>The constellation&#8217;s growth has not proceeded without controversy. Astronomers have raised persistent concerns about satellite brightness affecting ground-based observations of the night sky. The large number of reflective objects in low Earth orbit creates trails in telescope images that can obscure distant celestial objects. SpaceX has implemented various mitigation measures, including darkening treatments on newer satellites and experimental VisorSat designs intended to reduce reflectivity. However, the astronomical community remains divided on whether these efforts adequately address the concerns. </p>
<p>The 10,000-satellite milestone comes as SpaceX continues to expand service capabilities. The company has received regulatory approval to operate nearly 12,000 satellites in the initial constellation and has applied for authorization to add another 30,000 beyond that. Each generation of satellite incorporates improvements in communications bandwidth, onboard processing, and operational lifetime. The most recent versions feature laser inter-satellite links that allow data to hop between satellites without passing through ground stations, reducing latency and expanding coverage to polar regions and oceans far from gateway antennas. </p>
<p>Orbital debris concerns accompany every addition to the constellation. With thousands of satellites operating in similar orbital shells, the risk of collisions increases. SpaceX has equipped its satellites with autonomous collision avoidance systems that calculate potential conjunctions and execute avoidance maneuvers when necessary. The company has also implemented controlled deorbiting procedures, using remaining fuel to direct satellites into Earth&#8217;s atmosphere at end of life rather than leaving them as derelict objects. This approach aims to maintain sustainable use of low Earth orbit for future generations. </p>
<p>The commercial success of Starlink has prompted competitors to pursue similar constellation concepts. Amazon&#8217;s Project Kuiper, OneWeb, and other companies have announced plans for large satellite networks, though none have reached operational scale. SpaceX&#8217;s head start, combined with the company&#8217;s vertically integrated launch capability through its Falcon 9 rocket, has created significant competitive advantages that prove difficult for rivals to overcome. The 10,000-satellite milestone underscores how SpaceX has fundamentally changed the economics and scale of satellite communications. </p>
<p>Operating thousands of satellites in coordinated orbits presents unique engineering challenges. Each satellite must maintain precise timing synchronization to enable efficient handoffs as ground terminals transition between coverage areas. The satellites communicate with ground terminals using Ku-band and Ka-band frequencies, with newer generations adding V-band capabilities for increased bandwidth. The challenge lies in managing interference between satellites operating in similar frequency bands while maintaining service quality for millions of simultaneous users. </p>
<p>The constellation operates in shells at various altitudes, typically between 500 and 600 kilometers for polar-orbiting satellites. This altitude provides a balance between coverage area and orbital decay rates, requiring periodic station-keeping maneuvers to maintain altitude. At these altitudes, atmospheric drag remains significant enough that satellites require regular reboosting, consuming propellant that ultimately limits operational lifetime. SpaceX&#8217;s newer satellites incorporate improved thruster efficiency to maximize operational duration. </p>
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