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Study Finds Mercury Shrank Up to 14.5 Miles More Than Previously Measured

A reanalysis shows impact debris has hidden many contraction features, implying a larger iron core and prompting model revisions.

Nonprofit Announces Plan to Launch Low‑Cost Probe to Alpha Centauri by 2029

Study Maps Lunar South Pole Pockets Where Earth Microbes Could Survive

Psyche Flyby of Mars Confirms Trajectory Toward 2029 Rendezvous

Apophis Will Sweep 20,000 Miles From Earth in 2029 Close Pass, NASA Says

AI and Crowd Sleuths Home In on Rival Sites for the Long-Lost Luna 9 Lander

Solar Orbiter Study Finds Large Solar Flare Triggered by 'Magnetic Avalanche'

Sun-Facing Tail in Interstellar Comet 3I/ATLAS Reveals Wobbling Jets, Suggesting 15.5-Hour Rotation

Redwire Shares Rise on Eight-Figure Deal to Outfit The Exploration Company's Nyx With Docking Systems

Water Detected From Interstellar Visitor 3I/ATLAS as Perihelion Nears

BYU Team Defines 'Bloom' Origami That Folds Flat and Deploys Reliably

Astrophysicist Proposes Paperclip-Sized Probe to Test Black Hole Physics