Science ❯ Astronomy ❯ Planetary Science

Exoplanets

Planet Formation Habitability Planet Nine Sub-Neptunes Orbital Dynamics Warm Jupiters White Dwarfs KMT-2020-BLG-0414 K2-18b Observations Free-Floating Planets

Direct Spectroscopy Confirms Second Protoplanet in WISPIT 2 Disk

Spectroscopy of the planet’s infrared light reveals carbon monoxide, a strong marker of a newborn gas-giant atmosphere.

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

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

Late-Blooming Rocky World, JWST Chemistry Recast Planet Formation

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

Nature Study Weighs Four Young V1298 Tau Planets, Revealing Ultra‑Low Densities

Astronomers Make First Direct Mass Measurement of a Rogue Planet

JWST Reveals Pulsar-Orbiting ‘Lemon’ Planet With Helium–Carbon Atmosphere

Hubble Spots Second Transient Light Near Fomalhaut as First Fades From View

New Models Suggest Uranus and Neptune May Be Far Rockier Than Long Assumed

Experiments Confirm Hydrogen–Rock Reactions Can Create Large Water Stores Inside Sub-Neptunes

Free-Floating Planet Registers Record Growth Burst Spotted by ESO’s VLT

Webb Makes First Direct Chemical Reading of a Moon-Forming Disk Around CT Cha b

Hubble Spots White Dwarf Devouring Nitrogen‑Rich, Pluto‑Like Icy Debris

Hubble Spots White Dwarf Devouring Icy, Nitrogen-Rich Exo‑Pluto Fragment

NASA Confirms 6,000 Exoplanets, Marking a New Phase in the Search for Other Worlds

UCSC Model Links JWST Steam Detections to the Interiors of Sub‑Neptune Worlds

VLT Directly Images Infant Gas Giant ‘WISPIT 2b’ Inside Planet‑Building Disk

New Simulations Challenge Giant-Impact Origin of Jupiter’s Fuzzy Core

New Simulations Undercut Giant-Impact Origin of Jupiter's Dilute Core