The unusual shapes of the tiny asteroids Dimorphos and Selam have perplexed astronomers for years, but a new study finally explains how they got so strange. It also suggests these bizarrely shaped ...

A long-lost moon could explain why Mars is so different from the other rocky planets in the solar system. Today, Mars has two tiny moons. But early in its history, the Red Planet may have had a much ...

New research finds why some asteroids have weird, watermelon-shaped moons trapped in orbit around them, contrary to what typical asteroid formation theories predict. When you purchase through links on ...