Asteroids with tiny moons may be quietly trading material across space. Images from NASA’s DART mission revealed faint streaks on the moon Dimorphos—evidence of slow “cosmic snowballs” drifting from its parent asteroid, Didymos. The discovery provides the fir…
Roughly 15% of asteroids that pass near Earth have a smaller companion orbiting them. These paired objects are known as binary asteroid systems, and they are surprisingly common in our region of the … [+6695 chars]
