Science ❯ Astronomy

Planetary Formation

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

Tiny Kuiper Belt World Appears to Host a Thin Atmosphere

A January 2024 stellar occultation produced a refractive light curve prompting follow-up observations.

Webb Maps Basaltic, Airless Surface on Nearby Super‑Earth

Study Reports Tenuous Atmosphere on a 500-Kilometer Kuiper Belt World

Astronomers Flag 27 Possible Two‑Sun Planets With New TESS Timing Method

Stories older than 24h

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

JWST Spots Record-Low Metallicity in ‘Forbidden’ Giant Planet’s Atmosphere

JWST Finds Metal-Poor Atmosphere on Giant Planet Around a Small Red Dwarf

Second Infant Planet Confirmed Forming Around Nearby Star WISPIT 2

Second Forming Planet Confirmed in WISPIT 2 Disk

Webb Data Point to Sulfur‑Rich Magma‑Ocean Planet L 98‑59 d

JWST Helps Reveal Sulfur-Rich Magma-Ocean World L 98-59 d

Oxford-Led Team Proposes New Exoplanet Class With Sulfur-Rich Magma-Ocean World L 98-59 d

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