Science ❯ Astronomy

Planetary Formation

Protoplanetary Disks Gas Giants Solar System Planetary Systems Planetary Evolution Chemical Composition Exoplanets Planetary Atmospheres Protoplanets Core Accretion

Nearby Magma‑Ocean World Revealed by JWST Points to New Class of Sulfur‑Rich Planets

New modeling ties JWST spectra to a long‑lived magma ocean that stores sulfur, sustaining a hydrogen‑rich atmosphere.

Astronomers Tie Distant Star’s Chaotic Fading to Evidence of a Planetary Collision

New Simulations Show Gravitational Collapse Can Build Kuiper Belt 'Snowman' Worlds

Astronomers Find Rare ‘Inside-Out’ Planetary System With Rocky Outer World

Late-Blooming Rocky World, JWST Chemistry Recast Planet Formation

Study Ties ASASSN-24fw’s 200-Day Fade to Ringed Brown Dwarf or Super-Jupiter

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

New Jupiter Model Finds More Oxygen and Far Slower Atmospheric Mixing

Webb Links Protostellar Bursts to Crystal Formation and Outflows in EC 53

Giant Metal-Bearing Cloud Tied to Hidden Companion Explains Months-Long Dimming of Sun-Like Star

ALMA’s ARKS Survey Delivers Sharpest-Ever Map of 24 ExoKuiper Belts

ALMA Survey Publishes Sharpest Images of 24 Exo‑Kuiper Belts

NASA White Paper Details Data Roadmap for Habitable Worlds Observatory's Life Search

Jupiter Nears Opposition, Set to Dominate the Night Sky on January 10

Astronomers Make First Direct Mass Measurement of a Rogue Planet

Saturn-Mass Rogue Planet Gets First Direct Mass and Distance Measurement

Radio Search Finds No Signal From Interstellar Comet 3I/ATLAS as Hubble Images Twin Jets

Starlight Falls Short: Study Finds Dust-Driven Winds Don’t Work for Nearby Red Giant

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

Webb Finds Carbon-Rich Atmosphere on Lemon-Shaped Planet Orbiting a Pulsar