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Interstellar Comet 3I/ATLAS Nears Perihelion as Agencies Coordinate Observations

Officials say the rare visitor poses no impact risk, offering a brief chance to study material from another star system.

Three Earth-Sized Worlds Found in TOI-2267, the First Binary With Transits on Both Stars

NASA and IAWN Activate Coordinated Tracking of Interstellar Comet 3I/ATLAS Ahead of Perihelion

3I/ATLAS Nears Perihelion as Agencies Coordinate Tracking and Spacecraft Tail-Sampling Opportunities

NASA Confirms Earth’s Temporary Quasi-Satellite as Interstellar Comet 3I/ATLAS Nears Perihelion

3-Billion-Year-Old White Dwarf Is Actively Devouring Rocky Debris, Study Finds

New Simulations Revive Dark-Matter Explanation for Milky Way’s Gamma-Ray Glow

NASA Confirms Tiny Asteroid 2025 PN7 as Earth’s Quasi-Moon Through 2083

Twin Comets Lemmon and SWAN Light Up Northern Skies as Brief Viewing Window Peaks

Europa Clipper May Skim 3I/ATLAS’s Ion Tail as Interstellar Comet Nears Perihelion

Astronomers Map Orbit and Mass of Stormy Brown Dwarf Around Nearby Red Dwarf

JWST Finds Five Complex Organic Ices Around a Protostar in the Large Magellanic Cloud

Simulations Show Dark Matter Could Explain Milky Way’s Central Gamma-Ray Excess

Comet Lemmon Makes Closest Approach Oct. 20–21 With Prime Viewing Under New Moon

Keck Confirms Anti-Solar Tail and Nickel-Rich Emissions From Interstellar Comet 3I/ATLAS

Interstellar Comet 3I/ATLAS Surprises Researchers With CO2-Rich Coma and Nickel Vapor

Orionid Meteor Shower Peaks Oct. 21–23 Under New-Moon Skies

Milky Way Simulations Revive Dark-Matter Case for Galactic Center Gamma-Ray Excess

SpaceX Targets Saturday Vandenberg Falcon 9 Launch to Deploy 28 Starlink Satellites

First Radio-Bright Tidal Disruption Event Found Outside a Galaxy’s Core Shows Record-Fast Flares