Astrophysics

Cosmology Observational Astronomy Cosmic Phenomena Stellar Evolution Celestial Mechanics Orbital Mechanics Black Holes Star Formation Galaxies Planetary Science

Interstellar Visitor 3I/ATLAS Shows Jets and 'Heartbeat' as Study Points to Ice Volcanoes

A new analysis compares its spectra to primitive, metal‑bearing carbonaceous material, bolstering a natural cometary explanation.

3I/ATLAS Shows Suspected Cryovolcanic Eruptions as NASA Confirms No Earth Risk

Satellite Swarms Threaten Space Telescopes, Nature Study Finds

Indian Team Finds Early Grand-Design Spiral ‘Alaknanda’ in JWST Data

Corrected Qufu Coordinates Confirm 709 BCE Total Eclipse, Tighten ΔT Estimates

Google Sets 2027 Launch for Space-Based AI Testbeds Under Project Suncatcher

NIST Finds Mars Clocks Run 477 Microseconds a Day Faster Than Earth's

Waxing Gibbous Moon Shines at 91% Ahead of Dec. 4 Supermoon

Astronomers Report Possible Dark Matter Signal in Fermi Gamma-Ray Data

UN Network Launches Global Campaign to Track Interstellar Comet 3I/ATLAS Before Dec. 19 Flyby

Prospector’s ‘Gold Nugget’ Identified as 4.6-Billion-Year-Old Meteorite in Victoria

UN and IAWN Launch Two-Month 3I/ATLAS Tracking Exercise as Agencies Reaffirm No Threat

Gemini South Releases New Butterfly Nebula Image for Observatory’s 25th Anniversary

Study of Fermi Data Reports 20 GeV Gamma-Ray Halo Consistent With Dark Matter Near Milky Way Center

Voyager 1 Nears One Light-Day From Earth, With Milestone Expected in 2026

Tech Leaders Push Space Data Centers as Google Targets 2027 TPU in Orbit

Astronomer Reports 20 GeV Gamma-Ray Halo Consistent With Dark Matter in Fermi Data

3I/ATLAS Nears Dec. 19 Earth Flyby as NASA Affirms It Is a Natural Interstellar Comet

Interstellar Comet 3I/ATLAS Nears Dec. 19 Earth Flyby as Study Flags Strong Jupiter Perturbation

Gemini South Marks 25 Years With New Butterfly Nebula Image