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Planetary Formation

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Interstellar Comet 3I/ATLAS Shows Extreme Deuterium in Its Water, Signaling Deep-Freeze Origins

ALMA with an Arizona observatory separated heavy and ordinary water to deliver the first isotopic reading from an interstellar object.

ALMA Finds Interstellar Comet 3I/ATLAS Strikingly Methanol‑Rich With Unusual Outgassing

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

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

JWST Finds No Atmosphere on TRAPPIST-1d, Removing It From Earth-Analog List

ArXiv Study Exposes Daunting Propulsion Demands for 3I/ATLAS Intercept

NASA Study Reveals Asteroid Vesta Lacks a Core, Redefining Its Identity