Science ❯ Planetary Science

Planetary Formation

Solar System Super-Earths Rocky Planets Chemical Composition Differentiation Processes Debris Disks Chemical Signatures Interstellar Objects 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 Lunar Formation Planetary Destruction Particle Aggregation Lunar Formation Theories Earth-Moon System Red Dwarf Stars Planetary Characteristics

Mars-Mass Iron Bar Discovered Inside the Ring Nebula by New WEAVE Spectrograph

The result from the William Herschel Telescope’s new spectrograph triggers targeted follow-up to test competing formation ideas.

No Alien Signals Detected From Interstellar Visitor 3I/ATLAS in Green Bank Scan

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

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