Crater-covered rocky object in foreground, two thin rings stripe diagonally down in background, behind them the sun

Solar System

The Comet-Asteroid Chiron Has Rings — And They're Changing

A series of stellar occultations has provided evidence that the ring system around this strange object is evolving drastically.

Solar System

Two Extremely Red Asteroids Discovered Far from Home

Astronomers have discovered the two reddest objects in the asteroid belt, and their origin story might tell us more about planet formation.