Hey there! Today’s issue covers galaxy-scale rotation, NASA’s leadership hearing, a telescope milestone, and planetary insights.

📸 Image of the Day

The Andromeda Galaxy, Our Cosmic Neighbor | Image Credit: Subaru (NAOJ), Hubble (NASA/ESA), Mayall (NSF); Processing & Copyright: R. Gendler & R. Croman

🌌 Astronomers Find 50-Million-Light-Year Spinning Structure

  • University of Oxford researchers Lyla Jung and Madalina Tudorache led a study discovering a massive cosmic filament where embedded galaxies rotate in sync with the entire structure's larger spin.

  • The team used MeerKAT radio telescope data to find a 50-million-light-year-long filament containing a row of galaxies rotating in sync at 68 miles (110 kilometers) per second.

  • Madalina Tudorache stated this filament is a "fossil record of cosmic flows," helping scientists piece together how galaxies acquire their spin and grow over time from larger cosmic structures.

🚀 Upcoming Launches

ExPace | Kuaizhou 1A | 2025-12-05 | 04:00 EST | Jiuquan Satellite Launch Center, Chinai

Space | Hyperbola 1 | 2025-12-05 | 23:00 EST | Jiuquan Satellite Launch Center, China

CASC | Long March 8A | 2025-12-06 | 02:50 EST | Wenchang Space Launch Site, China

RAISE And Shine | Electron/Curie | 2025-12-06 | 22:00 EST | Māhia Peninsula, New Zealand

🏛️ Isaacman, NASA Nominee, Faces Questions From Congress

  • Private astronaut Jared Isaacman appeared before the US Senate Committee on Commerce, Science, and Transportation for his confirmation hearing, defending his proposed reform plans for the space agency.

  • Isaacman defended his "Project Athena" plan, characterizing the 62-page document as a "living document" meant to be refined with data and consistent with his prior testimony and interactions.

  • Isaacman testified that America is in a "great competition" with China, urging for action because falling behind in space could shift the balance of power here on Earth.

🔭 NASA Finishes Assembly of Roman Space Telescope

  • NASA technicians at the Goddard Space Flight Center have completed the full assembly of the Nancy Grace Roman Space Telescope, joining its inner and outer portions in a clean room.

  • The observatory's Wide Field Instrument features a 288-megapixel camera that will gather data hundreds of times faster than Hubble, amassing 20,000 terabytes over its five-year primary mission.

  • Senior project scientist Julie McEnery expects Roman to unveil more than 100,000 distant worlds and billions of galaxies, rapidly expanding our understanding of the universe after its launch.

📅 Today in Space History

On December 5, 1993, NASA's STS-61 mission began a record-setting series of five back-to-back spacewalks to repair the Hubble Space Telescope. Astronauts Musgrave and Hoffman started the critical work, replacing gyroscopes and electronics to correct the telescope's vision and save the groundbreaking observatory.

📵 Russian Astronaut Removed Off SpaceX Mission After Security Breach

  • Roscosmos, Russia's space agency, removed veteran cosmonaut Oleg Artemyev from the upcoming SpaceX Crew-12 mission, citing a transfer to another job just months before the scheduled February launch.

  • The Insider reported Artemyev was removed for violating International Traffic in Arms Regulations (ITAR) after he allegedly photographed SpaceX engines and other sensitive tech with his phone at SpaceX headquarters.

  • Launch analyst Gregory Trishkin has said that an interdepartmental investigation has been launched, noting it is difficult to imagine an experienced cosmonaut inadvertently committing such a gross violation.

🌋 New Models Suggest Venus’s Crust Enters Episodic Cycles

  • A University of Hong Kong (HKU) team led by Dr. Tianyang Lyu used advanced numerical models to study planetary tectonics, seeking to explain why Earth is active while Venus is not.

  • Their statistical analysis of mantle convection models quantitatively identified six distinct tectonic regimes for the first time, including a newly discovered "episodic-squishy lid" that alternates between active and inactive states.

  • Dr. Maxim Ballmer noted the models link mantle convection with magmatic activity, providing a unified framework for understanding Earth's history, Venus's current state, and the search for habitable exoplanets.

❓ Question of the Day

NASA might be getting a major overhaul — if you ran NASA for a day, what’s the first rule you’d change or create?

Send us a reply with your answer!

TThanks for exploring the cosmos with us today. Until next time, keep looking up, and keep wondering.

Clear skies ahead,
— Zapp

P.S. Check out this new LEGO Artemeis SLS Set!