Cool animation does a big circle around a nearby star cluster
2017 OF201 is a giant iceball far, far beyond Neptune...and it complicates things for Planet Nine
It’s not really an asteroid, nor maybe really a protoplanet.
Citizen science group is finding “active asteroids”
The spacecraft took some pretty cool shots of the tiny, lumpy moon
Astronomers used a new technique to find the building-sized rocks, the smallest ever seen at that distance
