Science ❯ Astronomy

Observational Astronomy

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Webb and Hubble Show Massive Star Clusters Break Free Faster

The finding offers a new yardstick for models of how stars shape galaxies.

Webb Reveals Non-Rotating Massive Galaxy in the Early Universe

Astronomers Detect Thin Atmosphere on Small World Beyond Pluto

Study Reports Tenuous Atmosphere on a 500-Kilometer Kuiper Belt World

ALMA Finds Semi-Heavy Water in Interstellar Comet 3I/ATLAS

Dark Energy Camera Reveals Vast Halo and Stellar Stream Around Sombrero Galaxy

Interstellar Comet 3I/ATLAS Shows Extreme Heavy-Water Signal, Pointing to an Ultra‑Cold Origin

Interstellar Comet 3I/ATLAS Shows Extreme Heavy-Water Enrichment, Study Finds

DECam Image Reveals Sombrero Galaxy’s Giant Halo and Stellar Stream

Ultra-Faint Dwarf Galaxies Reveal Early-Universe Conditions in New LYRA Simulations

NASA Moves Up Launch of Roman Space Telescope to Early September

Astronomers Measure Cygnus X-1’s ‘Dancing’ Black Hole Jets at 10,000 Suns of Power

DESI Completes Five-Year Survey With Record 3D Map of the Universe

JWST Detects Methane From Interstellar Comet 3I/ATLAS

Cosmic Bounce Theory Suggests Black Hole 'Fossils' Could Account for Dark Matter

JWST Studies Report Strongest Evidence Yet of Population III Stars Near GN‑z11

Global Collaboration Pins Local Hubble Constant at 73.50 ± 0.81 km/s/Mpc With 1% Precision

Study Points to Tight Supermassive Black Hole Binary in Markarian 501

HETDEX Maps 33,000 Hydrogen Halos Around Early Galaxies

JWST Spots Record-Low Metallicity in ‘Forbidden’ Giant Planet’s Atmosphere