Science ❯ Planetary Science

Planet Formation

Solar System Chemical Composition Gas Giants Rocky Planets Interstellar Objects Accretion Stellar Chemistry Gas and Dust Disks Cosmic Nurseries Protoplanetary Disks

Nearby Super‑Earth Candidate GJ 3378 b Reclassified as Likely Rocky World

Lowered mass places the 21.45‑day planet inside its star's habitable zone, prompting urgent follow‑up to test whether it retains an atmosphere.

Reanalysis Lowers Mass of Nearby Exoplanet GJ 3378b and Places It in Habitable Zone

JWST Finds Extreme Isotopes in Interstellar Comet 3I/ATLAS

Roman Space Telescope Cleared for Shipment as Teams Move Toward September Launch Window

NASA’s Psyche Skims Mars for Gravity Assist on Course to Metal-Rich Asteroid

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

Ubiquitous Carbon Film Found to Control Static Charge Flow on Insulating Oxides

ALMA Reveals 3I/ATLAS Is Exceptionally Methanol‑Rich, Indicating a Heterogeneous Interstellar Comet

Study Finds Planetary Oxygen at Birth Controls Life-Critical Phosphorus and Nitrogen

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

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

Webb Data Point to Thick Atmosphere on Ultra‑Hot Super‑Earth TOI‑561 b

Perihelion Data Show Non-Gravitational Push on 3I/ATLAS, Prompting New Scrutiny

Lab Experiments Reveal Planets Can Make Water From Hydrogen–Magma Reactions

Nearby Super‑Earth GJ 251 c Detected in Habitable Zone After Two‑Decade Radial‑Velocity Campaign

Interstellar Comet 3I/ATLAS Withstands Solar Storm as Mars Flyby Nears

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

Simulations Point to Carbon as Trigger for Earth’s Inner-Core Formation

UC Santa Cruz Model Recasts Sub‑Neptune ‘Steam Worlds’ With Colder, Smaller Interiors

Rare Jet-Driven Bubble Warps Protoplanetary Disk in WSB 52