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Ancient, Cold Origin Found for Interstellar Comet 3I/ATLAS

High-precision isotope spectra point to formation in a very cold, metal-poor environment with a model-dependent age up to about 12 billion years.

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ALMA Finds Deep Carbon Monoxide That Points to an Ice-Rich Uranus

Scientists Propose Moon Dust Could Hide Pulverized Alien Technology

SETI Finds No Radio Signs From Interstellar Visitor 3I/ATLAS

SETI Radio Search Finds No Alien Technology on Interstellar Comet 3I/ATLAS

Astronomers Infer Magnetic Fields on Seven Ultra‑Hot Jupiters

Webb Detects Methane on Interstellar Comet 3I/ATLAS

For All Mankind Season 5 Finale Ties Science and Politics and Sets Up Final Season

Study Suggests Nereid Is Neptune’s Last Intact Original Moon

JWST Resolves Morning Clouds and Clear Evenings on Hot Jupiter WASP-94A b

Scientists Warn Search for Alien Life Is Missing Signs Through 'False Negatives'

Pentagon Says Second UAP File Release Is Coming Very Soon

Hubble Reanalysis Weakens Case for Water Plumes on Europa

Perseverance Shares Westernmost Selfie and Vivid Panorama From Mars

Astronomers Find Nearby Super-Earth in a Red Dwarf’s Habitable Zone

Curiosity Frees Stuck Mars Rock After Rare Drill Mishap

New Statistical Biosignature Distinguishes Life From Nonlife

JWST Finds Heavy, Water-Rich Atmosphere on Mini-Neptune in Rare Hot-Jupiter System

Astronomers Detect Thin Atmosphere on Small World Beyond Pluto

Webb Maps the Surface of a Nearby Super-Earth, Revealing a Dark Basaltic World