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Astrophysics

Black Holes Star Formation Cosmology Cosmic Phenomena Stellar Evolution Supernovae Orbital Mechanics Interstellar Objects Observational Astronomy Space Missions

New Images Show Interstellar Comet 3I/ATLAS Glowing Green With an Elusive Tail After Sun Swing

The object will pass Earth safely at about 270 million kilometres on December 19.

Most Luminous Black-Hole Flare on Record Traced to Star Torn Apart 10 Billion Light-Years Away

Record Black Hole Flare Points to Tidal Disruption of a Giant Star

Strong Geomagnetic Storm Triggers Widespread Aurora With More Possible Tonight

China Notifies NASA of Satellite Conjunction, Offers to Maneuver in First Direct Outreach

China Delays Shenzhou-20 Crew’s Return After Suspected Space Debris Hit

3I/ATLAS Reappears After Solar Pass With Striking Blue Hue and Fresh Activity

Japanese Astronomer Films Two Meteor Strikes on the Moon Days Apart

New Framework Turns Black-Hole Shadows Into Tests of Gravity

China’s Tianwen-1 Releases Close Images of Interstellar Comet 3I/ATLAS as JPL Flags Non‑Gravitational Acceleration

Large TESS Survey Finds Close-In Giant Planets Scarcer Around Evolved Stars

Solar Orbiter’s Polar Vantage Reveals Fast Poleward Magnetic Flows on the Sun

Euclid Reveals Orion's Hidden Stars in New Infrared Image From Guiding Test

Record Black Hole Flare Shone With the Light of 10 Trillion Suns From 10 Billion Light-Years Away

First Post-Perihelion Images Capture 3I/ATLAS After Sun Passage

CERN Experiment Recreates Blazar Pair Cascades, Points to Intergalactic Magnetic Fields

Interstellar Comet 3I/ATLAS Reappears to Earth View as Anomalies Drive Push for Faster Data Releases

Ancient White Dwarf Caught Accreting Debris From a Shattered Rocky World

3I/ATLAS Brightens Unusually and Turns Blue Near the Sun as Data Indicate a Cosmic-Ray–Altered Crust

ESO Telescope Reveals Bat-Shaped Stellar Nursery 10,000 Light-Years Away