Science ❯ Planetary Science

Planetary Formation

Solar System Super-Earths Chemical Composition Planetary Characteristics Differentiation Processes Debris Disks Chemical Signatures Interstellar Objects Rocky Planets Solar System History Volatiles Delivery Origins of Water Icy Comets Chemical Processes Inner Core Formation Formation Processes Stellar Influence Planetesimals Trans-Neptunian Objects Chemical Evolution Gravitational Influence Building Blocks of Planets Meteorite Impacts Moon Formation Theory Particle Aggregation Lunar Formation Earth-Moon System Red Dwarf Stars

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

A cooler‑than‑expected dayside suggests heat‑shifting gases above a global magma ocean.

Scientists Detect Habitable-Zone ‘Super‑Earth’ GJ 251 c Just 18 Light‑Years Away

Ancient Mantle Rocks Reveal Potassium-40 Deficit Linked to Surviving Proto‑Earth

MIT Team Finds Potassium-40 Anomaly That Points to Surviving Proto‑Earth Mantle

New Analysis Finds Asteroid Belt’s Active Mass Shrinking by 0.0088% Per Million Years

The Moon Is Drifting Farther From Earth by 3.8 Centimeters a Year

SwRI Says Interstellar Comet Flybys Are Achievable as 3I/ATLAS Defies Expectations

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

OSIRIS-REx Samples Show Bennu’s Presolar Stardust, Interstellar Organics, and Faster-Than-Expected Weathering