Science ❯ Planetary Science ❯ Planetary Formation

Solar System

Cometary Bodies Cosmic Events Cometary Behavior Cosmic Neighborhood Interstellar Bodies

Webb Detects Methane on Interstellar Comet 3I/ATLAS

The measurement reveals a carbon-dioxide–heavy chemistry that suggests the comet formed in an environment unlike most Solar System comets.

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

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