Science ❯ Planetary Science

Asteroid Composition

Rubble Pile Asteroids Hydrated Minerals Metallic Compositions Seismic Activity Impact Studies Solid Rock vs. Rubble Pile Surface Features Rubble-Pile Asteroids Structural Integrity Origin of Asteroids Density Measurements Ejecta Dynamics Boulder Ejection Silicate Minerals M-class Asteroids Carbon-rich Asteroids Research Surface Properties Thermal Properties Mineralogy

Cracks in Bennu’s Boulders Solve OSIRIS‑REx Thermal Mystery

Peer-reviewed XCT analyses scaled to boulder size pinpoint internal fractures driving the asteroid’s low thermal inertia.

Newly Found Asteroid Inside Venus Completes a 128-Day Orbit, Second-Fastest on Record

Hayabusa2 Target 1998 KY26 Is Just 11 Meters Across With 5-Minute Days, Complicating 2031 Visit

New Mapping Method Targets Safer Asteroid Strikes to Avoid Gravitational Keyholes

LICIACube Images Show 16 Million-Kilogram DART Ejecta That Drove Dimorphos’ Deflection