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Planet Formation

Protoplanetary Disks Exoplanets Jupiter Protoplanetary Discs Debris Disks Theia Rocky Planets Gas Giants Giant Planets Free-Floating Planets Orbital Dynamics HOPS-315 Rogue Planets Dust Dynamics Dust Grains PDS 70 System M Dwarf Stars Sub-Earth Planets Radial Velocity Method Protostars Internal Heat Dust and Gas Accumulation Atmospheric Composition Super Earths Water Ice Debris Fields Material Composition Dust Disks Protoplanets Milky Way Cosmochemistry Meteorites Giant Impacts Binary Systems Mercury Formation Jupiter Formation Chondrules WISPIT 2b Wispit 2b Carbon Dioxide Disks Hidden Planets Exoplanet Characteristics Earth-like Planets Water Production Gravitational Influence Moon Formation Circumplanetary Disks Accretion Processes Cha 1107-7626 Gravitational Effects Water Origins Planetary Destruction Isotopes Theia and Earth Collision Theia and Moon Formation Theia Hypothesis Super Jupiters LHS 1903 System Core Accretion Proto-planetary Disk Chemical Conditions LHS 1903 Molecular Clouds Interstellar Medium Building Blocks of Planets Planet Composition Terrestrial Planets Gas Giant Planets Early Planet Formation Planet Nine Photoevaporation Volcanism Earth-sized Planets Cosmic Dust Super Puff Planets Super-Puff Planets Brown Dwarfs

CHEOPS Reveals 'Inside-Out' Four-Planet System Around Red Dwarf LHS 1903

An outer rocky super-Earth beyond two gas-rich neighbors points to late formation in a gas-poor disk.

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

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

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

Astronomers Make First Direct Mass Measurement of a Rogue Planet

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

Study Traces Moon-Maker Theia to the Inner Solar System

Science Study Points to Inner‑Solar‑System Origin for Moon‑Forming Impactor Theia

Large TESS Survey Finds Close-In Giant Planets Scarcer Around Evolved Stars

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

TOI-2267 Becomes First Binary With Planets Transiting Each Star

Early Jupiter Shaped the Inner Solar System, Study Finds

First Detection of Heavy Water in a Planet-Forming Disk Points to Prestellar Origins

Rogue Planet Cha 1107‑7626 Caught in Record Growth Spurt at 6 Billion Tons per Second

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

Interstellar Comet 3I/ATLAS Tied to New Planet 'Seeding' Hypothesis

ALMA Maps Fomalhaut’s Warped Debris Ring, Pointing to Hidden Planet Sculptors

Astronomers Directly Image Newborn Planet in Multi-Ringed Disk in First Clear Case

Study Pins Jupiter’s Birth to 1.8 Million Years After the Solar System Began

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