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Sam's News — science — 2026-09-28

Space

8.5 SpaceX targets first orbital flight of Starship megarocket

SpaceX conducted Starship's first orbital flight test on September 28, 2026, carrying 26 Starlink V3 satellites to orbit and completing six Earth orbits over a 10-hour mission. Success marks a critical milestone for NASA contracts and the planned Artemis III lunar mission.

  • Flight 14 launched September 28, 2026 from Texas; 75-minute window 7:15–8:30 a.m. CT
  • First orbital insertion of Starship after 13 previous flight tests
  • Payload: 26 Starlink V3 satellites (three equipped with cameras)
  • Planned trajectory: ~275 km altitude, six orbits, Pacific splashdown west of Chile
  • Critical for NASA multi-billion dollar contracts and Artemis III mission next year

Sources: WKMG News 6 / ClickOrlando AI Web Searched, AOL / Independent AI Web Searched, Phys.org RSS, Hacker News (front page) RSS

8.5 SpaceX Starship achieves low-Earth orbit milestone

SpaceX's Starship successfully reached low Earth orbit on September 28 during its 14th test flight, marking the first Starship test designed to achieve and maintain stable orbit. The vehicle deployed Starlink satellites and returned to Earth via water landing, representing a major developmental milestone.

  • 14th test flight achieved low Earth orbit on September 28
  • First Starship test flight designed for stable orbit maintenance
  • Deployed Starlink satellites during mission
  • Vehicle completed water landing return

Sources: The Epoch Times AI Web Searched, Engadget RSS, Live Science RSS

7.5 Quantum computer operates in space for the first time

Scientists at the University of Vienna achieved a global first by operating a quantum computer in space aboard a Falcon 9 rocket in low Earth orbit. Despite laser-adhesive degradation reducing output power from 20 to 4 milliwatts, the successful operation demonstrates feasibility of on-satellite quantum data processing to bypass downlink bandwidth limitations.

  • Launched June 2025, operated in low Earth orbit for first time
  • Laser adhesive degraded in vacuum: output fell from 20 to 4 milliwatts
  • Key challenge: downlink bandwidth limits force Earth transmission of all raw satellite data
  • Quantum processing on satellites could offer alternative to ground processing

Sources: IEEE Spectrum (Innovation) AI Web Searched, Phys.org RSS

Science

7.5 MIT Develops Stable RNA Vaccine Formulation for Room-Temperature Storage

MIT researchers developed an RNA vaccine formulation enabling room-temperature storage for up to one year or ~100°F for two months, addressing the cold-chain limitation that has hindered mRNA vaccine distribution. An AI algorithm optimized the lipid nanoparticle design and polymer matrix.

  • Stable at room temperature for up to 1 year; stable at ~100°F for 2 months
  • Mouse studies showed immune response as strong as Moderna-like cold-storage vaccines
  • Eliminates ultracold storage requirement (-90° to -15°C), reducing distribution costs
  • AI algorithm reduced number of experiments needed, accelerating development
  • 14.3 million children received no vaccines in 2024 partly due to cold-chain logistics complexity

Sources: MIT News AI Web Searched, Open Access Government AI Web Searched, Life Scientist AI Web Searched, Phys.org RSS, MIT — Computers RSS, MIT — Artificial Intelligence RSS

7.5 Mathematicians solve 55-year-old conjecture using randomness

A group of young mathematicians solved Ronald Graham's 55-year-old conjecture posed in 1971 about rearranging random integers so all partial sums are unique. The conjecture, potentially inspired by juggling mathematics, was resolved using randomness as a key technique.

  • Conjecture posed by Ronald Graham in 1971
  • Asks if random integers can be rearranged so all partial sums differ
  • Group of young mathematicians solved it using randomness as key technique
  • May have been inspired by mathematics of juggling

Sources: Quanta Magazine AI Web Searched

7 James Webb observes planetary system disk erosion, shrinking planet-formation windows

JWST observations reveal that young planetary disks lose gas through jets, winds, and radiation, limiting the time available for giant planets to form.

Sources: ScienceDaily RSS

Climate

7.5 Drought halts photosynthesis, causing forests to emit more CO₂ than they absorb

During droughts, trees halt photosynthesis to conserve water, causing forests globally to shift from carbon sinks to net emitters. Research across 137 U.S. forest sites shows that trees continue photosynthesizing months after growth ceases, meaning less carbon is permanently stored than climate models predict, a concern as droughts intensify.

  • Trees close stomata during drought, stopping CO₂ capture: ~400 water molecules released per CO₂ molecule absorbed
  • Forests globally capture ~25% of human CO₂ emissions but lose this role under extreme drought
  • 36% of annual carbon uptake in eastern U.S. forests occurs after growth ends in late summer
  • Photosynthesis decoupling from wood growth reduces permanent carbon storage

Sources: The Conversation AI Web Searched, ScienceDaily AI Web Searched, The Guardian AI Web Searched, Phys.org RSS

Neurology

7 Immune activation outside the brain drives Alzheimer's neurodegeneration pathway

Washington University scientists discovered that T cells driving Alzheimer's neurodegeneration are activated in lymph nodes before entering the brain. Blocking the signals preparing these T cells in lymph nodes dramatically reduced neurodegeneration and preserved cognitive abilities in mice, potentially offering a more accessible treatment target than blood-brain barrier therapies.

  • T cells contributing to Alzheimer's activated in lymph nodes outside brain
  • Blocking lymph-node signals reduced neurodegeneration and preserved cognition in mice
  • Published September 3, 2026 in Nature Neuroscience
  • Offers more accessible treatment target than therapies requiring blood-brain barrier passage

Sources: ScienceDaily AI Web Searched, ScienceDaily — Health RSS

Biotech

7 MIT researchers develop faster lipid nanoparticle production method

MIT scientists created an automated process for producing lipid nanoparticles with greater speed and precise control over size and shape, accelerating RNA therapy development.

Sources: Phys.org RSS

Conflict

7 Houthi advance in Yemen displaces 130,000 as humanitarian crisis deepens

Iran-aligned Houthi rebel forces advanced in Yemen, displacing over 130,000 people since early September and exacerbating the nation's humanitarian crisis.

Sources: Phys.org RSS