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New Models Say Earth Could Avoid Being Engulfed by the Sun

Revised tidal physics make the amount of future solar mass loss the central unknown for Earth's long‑term fate.

Crescent Moon Joins Venus, Jupiter and Mercury in a Low‑West Evening Planet Parade

Tonight the Moon Will Hide Regulus Across Parts of the Americas

Chandra Maps Hot Astrosphere Around Young Sun-Like Star HD 61005

Moon to Occult Bright Star Regulus Tonight Over Parts of North America

White Dwarf Without Disk Has Driven Thousand-Year Bow Shock, VLT Study Finds

First All-Sky Census of Nearby K Dwarfs Flags 529 Prime Targets for Earth-Like Planet Searches

Hubble Data Tie Betelgeuse’s 6-Year Variations to Hidden Companion’s Gas Wake

2026 Sky Guide: Total Eclipse Over Iceland and Spain as NASA Targets Early-Year Artemis II

New Images and Holiday Sky Guides Spotlight the Christmas Tree Cluster

Hubble Spots Second Debris Cloud at Fomalhaut, Confirming Repeated Planetesimal Collisions

Galaxies Are Cooling as Star Birth Slows, New Euclid–Herschel Analysis Suggests

New 'Eschatian Hypothesis' Says First Confirmed ET Civilization Would Be Unusually Loud

Leonids Peak Before Dawn With Best Views Early Nov. 18

Last Quarter Moon Draws Close to Jupiter Overnight in Easy Sky Show

ALMA Maps Fomalhaut’s Warped Debris Ring, Pointing to Hidden Planet Sculptors

Scientists Confirm Companion Star Orbiting Within Betelgeuse’s Atmosphere

Earth’s Aphelion and Mercury’s Greatest Elongation Usher in July’s Night Sky Highlights

New Moon Sets Stage for Five July Meteor Showers

Saturn-Sized Exoplanet Orbits Record-Low Mass Star, Challenging Formation Theories