Science ❯ Astronomy ❯ Astrophysics

Planetary Formation

Protoplanetary Disks James Webb Space Telescope Debris Disks Planetesimals Exoplanets Gas and Dust Disks Primordial Planetesimal Disks Lunar Dynamics Core Accretion Models Moon-Moon Mergers

Astronomers Confirm Two Super‑Puff Jupiter‑Size Planets

Planned JWST observations will seek to confirm massive hydrogen‑helium envelopes, testing models for how such ultra‑low‑density giants form.

ALMA Finds Extreme Heavy-Water Ratio in Interstellar Comet 3I/ATLAS

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

Study Links Titan’s Moon‑Merger Origin to Saturn’s Young Rings

JWST Sees Protostar Forge Crystals in Outbursts, Then Hurl Them to Comet-Building Zones

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

Astronomers Make First Direct Mass Measurement of a Rogue Planet

Hubble Spots Record-Breaking, Chaotic Planet-Forming Disk ‘Dracula’s Chivito’

Hubble Reveals Largest Known Planet-Forming Disk, 'Dracula’s Chivito'

JWST Study Reveals 'Lemon-Shaped' Pulsar Companion With Helium–Carbon Atmosphere

Hubble Captures Record-Breaking Chaotic Planet-Forming Disk 1,000 Light-Years Away

Hubble Catches Two Debris-Cloud Collisions at Fomalhaut, Recasting ‘Fomalhaut b’

Webb Finds Helium–Carbon Atmosphere on First Hot Jupiter Known Around a Pulsar

JWST Finds Strong Evidence of a Thick Atmosphere on Molten Super-Earth TOI-561 b

Webb Spots Tiny New Uranian Moon, Lifting Planet’s Count to 29

Mineral Condensation Captured in Planet-Forming Disk of Protostar HOPS-315

Astronomers Observe First Solid Condensation of Rocky Planet Precursors Around Distant Star

Webb Reveals Silicate Clouds and Moon-Forming Disk in YSES-1 System

Webb Telescope Confirms First Extraterrestrial Water Ice in Young Star System

Astronomers Confirm Discovery of Rare Disintegrating Exoplanet BD+05 4868 Ab