Science ❯ Astronomy

Galactic Dynamics

Galaxy Mergers Galactic Collision Milky Way Galaxy Planetary Formation Local Group Kinematics Milky Way Galaxy Structure High-Speed Objects Galactic Mergers Stellar Ages Cosmic Events Wave Phenomena Tidal Disruption Supernovae Cosmic Collisions Galaxy Evolution Object Origin Galaxy Collision Feedback Loops Star Movement Gas Clouds Star Age Stellar Evolution

Webb Reveals 3I/ATLAS as an Ancient Comet Born in a Frigid, Metal‑Poor Environment

Extreme isotope measurements suggest our local comets may not represent comet chemistry across the galaxy.

Astronomers Pinpoint the Milky Way’s Star-Forming Edge at About 35,000–40,000 Light-Years

Astronomers Report Most Metal-Poor Star Yet From the Large Magellanic Cloud

Gaia Maps 'Great Wave' Rolling Through the Milky Way's Outer Disk

Milky Way’s Fate Hinges on 50-50 Odds of Andromeda Collision

Study Finds 2% Chance of Milky Way–Andromeda Collision in 5 Billion Years

Star Formation in Galaxies Tied to Gas Location, Not Quantity