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

ALMA observations days after perihelion enabled the first deuterium measurement on an interstellar visitor.

Astronomers Find Most Pristine Star Yet From the Large Magellanic Cloud

Hubble Accidentally Captures Comet C/2025 K1 Splitting Into Multiple Fragments

ALMA Unveils Record 650-Light-Year Mosaic of the Milky Way’s Turbulent Core

JWST Spots Sulfur in HR 8799 c, Strengthening Case for Core Accretion

Lab-Made Cosmic Dust Matches Space Signatures in Peer-Reviewed Study

Lab Study Shows Peptides Can Form on Icy Space Dust Under Cosmic-Ray Conditions

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

ALMA Spots Methanol-Rich Chemistry in Interstellar Visitor 3I/ATLAS

JWST Finds Phosphine on Ancient Brown Dwarf, Matching Model Predictions

Webb Makes First Direct Chemical Reading of a Moon-Forming Disk Around CT Cha b

3I/ATLAS Shows Growing Tail and Rapid Brightening as Evidence Favors a Natural Comet

Hubble Spots White Dwarf Devouring Icy, Nitrogen-Rich Exo‑Pluto Fragment

Webb Traces Planet-Building Dust from Butterfly Nebula to ‘Butterfly Star’ Disk

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

Researchers Identify Sulfur Trapped in Interstellar Ices

First Synthesis of Methanetetrol Reveals Photodissociation Hurdles for Interstellar Detection

HeH+ Ion’s Reactivity Endured at Cryogenic Temperatures, Reframing Early-Star Cooling

XRISM Maps Sulfur in Gas and Solid Phases Across the Milky Way