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Astrophysics

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

Webb and SPHEREx Confirm CO2-Dominated Coma on Interstellar Comet 3I/ATLAS

New measurements fix an unusually high CO2-to-water ratio, quantifying gas output ahead of the object’s late-October perihelion.

Webb Reveals Butterfly Nebula’s Hidden Core and Planet-Building Dust

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Astronomers Directly Image Newborn Planet in Multi-Ringed Disk in First Clear Case

Webb and SPHEREx Confirm CO2-Dominated Coma Around Interstellar Comet 3I/ATLAS

Reanalysis Sharpens 1977 'Wow!' Signal: Stronger, Higher-Frequency, Tighter Origin

SpaceX's Starship Completes Tenth Test With Booster Recovery and Upper-Stage Splashdown

Brightest Fast Radio Burst Precisely Located in Nearby Galaxy Using CHIME Outriggers

Nature Study Reveals Rare Supernova That Exposed a Star’s Inner Layers

StarryStarryProcess Maps Star Spots From TESS and Kepler to Clarify Exoplanet Signals

CHIME Outriggers Pinpoint Brightest Nearby Fast Radio Burst to Galaxy NGC 4141

Astronomers Identify Ultra-Stripped Supernova, Propose New ‘Type Ien’

CHIME Outriggers Pinpoint Record-Bright Fast Radio Burst to Nearby Spiral Galaxy

New X-Ray–Radio Composite of the ‘Cosmic Hand’ Exposes Odd Mismatches in Pulsar Nebula

Webb Spots Tiny New Moon Around Uranus, Bringing Count to 29

Spacecraft Observations Sought as Loeb Raises Nuclear-Powered Theory for Interstellar Object 3I/ATLAS

James Webb Spots Tiny New Moon Orbiting Uranus

Rare Supernova Reveals Silicon-Rich Inner Shells, Confirming Layered Stellar Interiors

130-Year Record Shows Planetary Nebula IC 418 Heating Faster Than Recent Models Predict

ALMA Finds Giant Gas Streamers Feeding a Massive Young Star

ALMA Maps 1.4‑Light‑Year, Sun‑Mass Bubble Around Red Supergiant DFK 52