Science ❯ Astronomy

Astrophysics

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

New X-Ray and Gemini Images Refine View of Interstellar Comet 3I/ATLAS Before Dec. 19 Earth Flyby

Fresh measurements across wavelengths reinforce natural, volatile-driven activity, highlighting unusual gases in the coma.

Webb Data Point to Thick Atmosphere on Ultra‑Hot Super‑Earth TOI‑561 b

Closest Directly Imaged Planet Around Two Suns Confirmed on a 300-Year Orbit

Interstellar Comet 3I/ATLAS Shows Faint X-Ray Halo as Safe Dec. 19 Flyby Nears

Study Reports First Clear Evidence of Black Hole Frame-Dragging

Record-Long Gamma-Ray Burst and Earliest-Known Supernova Challenge Models of Cosmic Explosions

Real-Time Black Hole Flare Triggers Ultrafast Wind at 20% Light Speed

Scientists Detect Largest Known Rotating Filament in the Cosmic Web

JWST Detects Chemical Fingerprint of Primordial 'Monster Stars' in Early Galaxy

Study Ties Ancient Close Stellar Flyby to a ‘Cosmic Scar’ in the Sun’s Neighborhood

Early JWST Campaign Finds Stellar Noise Hindering TRAPPIST-1e Atmosphere Test

Early Interferometric Images Recast Novae as Multi-Stage, Directional Eruptions

Hubble and Juice Capture New Views of Interstellar Comet 3I/ATLAS Ahead of Dec. 19 Flyby

XRISM Pinpoints Chlorine and Potassium Surplus in Cassiopeia A, Challenging Supernova Models

Hubble and ESA’s JUICE Return New Views of Interstellar Comet 3I/ATLAS Ahead of Dec. 19 Earth Pass

NASA Study Warns Satellite Megaconstellations Will Contaminate Space-Telescope Images

Hubble and ESA’s Juice Capture 3I/ATLAS With Active Coma and Twin Tails

NASA Completes Roman Space Telescope Construction as Final Testing Begins

Astronomers Map 50-Million–Light-Year Rotating Cosmic Filament Nearby

NASA Study Warns Satellite Megaconstellations Could Severely Degrade Space Telescope Images