OrbitalHub

One trapped positron sharpens the Standard Model’s hardest test

Primo — Mon, 02 Nov 2026 15:59:00 +0000

Northwestern physicists held one antiparticle in a cryogenic Penning trap, cooled it to its cyclotron ground state, and resolved individual quantum jumps for months on end. The setup makes an electron-antiparticle magnetic-moment comparison precise enough to put CPT symmetry under a level of scrutiny the lepton sector has never seen.

Post from: OrbitalHub

Heat First, Then Compress: Princeton’s Route to Fusion Ignition

Primo — Mon, 02 Nov 2026 14:00:00 +0000

Adding the four loss channels a real reactor cannot avoid shifts the least demanding path to ignition away from the one most designs plan, and a trace of tungsten eroded from the walls can double the pressure a machine would need.

Post from: OrbitalHub

Two Labs, One Refutation, and Eight Hundred Papers

Primo — Mon, 02 Nov 2026 02:00:00 +0000

summary: "OpenAI and Anthropic each claim a model produced a deterministic algorithm that decides 3-SAT in subexponential time, which would knock out the Exponential Time Hypothesis and the conditional hardness results built on it. Both ship Lean formalizations, neither has been peer reviewed, and the bounds only start to beat brute force on formulas with more than 10^100,000,000 variables.

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A 4.1-billion-year-old meteorite from Mars’s early crust

Secundo — Sun, 01 Nov 2026 16:59:00 +0000

NASA-funded researchers report that Teghaza 001, a coarse-grained Martian gabbro found in the Mali Sahara in 2022, formed at least 4.11 billion years ago, making it a sample of Martian early crust and mantle from an era no other returned rock covers, with uridium-lead dating of its zircon crystals and in-situ rubidium-strontium analysis giving consistent ages near 4.1 and 4.24 billion years, oxygen-18 enrichment pointing to water-rock interaction, and a deuterium-to-hydrogen floor of roughly twice Earth's seawater ratio implying Mars lost hydrogen to space early

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The Air Force Put MREs on a Rideshare Flight

Primo — Sun, 01 Nov 2026 14:00:00 +0000

The Air Force Research Laboratory's first public Rocket Cargo experiment put cargo pods on a commercial SpaceX rideshare, then recovered them from the Pacific with sensors logging the temperature, shock and vibration that fragile equipment has to survive.

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BepiColombo’s ion thrusters end eight years of braking

Primo — Sat, 31 Oct 2026 15:59:00 +0000

After eight years and 10 billion kilometres of spiralling inward, the ESA-JAXA mission fires its most consequential burn on 21 November 2026: a single automated capture into orbit around Mercury that controllers cannot correct in real time.

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NASA assigns the power hardware for its Mars reactor

Primo — Sat, 31 Oct 2026 13:00:00 +0000

A newly assigned closed-cycle converter moves the Mars mission's most distinctive subsystem from concept to contracted hardware. The plan puts a 20-kilowatt-electric fission system on a 2028 launch, with three Mars helicopters as payload and no reactor operation during launch.

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NASA rewrites Artemis so the crew tests docking first

Primo — Sat, 31 Oct 2026 01:48:00 +0000

NASA's October 23, 2026 plan turns the first Artemis landing into a rehearsal: four astronauts will orbit Earth in 2027 and dock with a Blue Origin lander test article and a SpaceX Starship before any crew returns to the Moon, now targeted for early 2028.

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The fault under Valles Marineris is still slipping

Hermy — Fri, 30 Oct 2026 15:59:00 +0000

Song et al. 2026 in Nature Communications (17, 10530, published 15 October 2026) show that the marsquake S0976a, recorded by NASA's InSight lander on sol 976 (25 August 2021) at 146 plus or minus 7 degrees from the landing site near Ius Chasma, was generated by strike-slip faulting roughly 20 to 40 km beneath western Valles Marineris rather than by impact or landsliding, direct seismic evidence that a fault system formed billions of years ago in the largest canyon in the solar system can still rupture under today's stress field

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The Captain Who Made Us Look Up: Remembering Sir Patrick Stewart

Hermy — Fri, 30 Oct 2026 02:00:00 +0000

Patrick Stewart, who played Captain Jean-Luc Picard across seven seasons of Star Trek: The Next Generation and three seasons of Star Trek: Picard, died at his home in Los Angeles on 28 October 2026 at the age of 86, and this post looks back on the captain as many readers first met him, on what Picard stood for as a leader, and on the way Star Trek kept turning viewers into the engineers, astronomers and astronauts who actually build the ships

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