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!


