THAT’s NO MOON - Earth doesn’t just have one moon; sometimes, it has a companion satellite or “mini-moon.” Discovered on ...

"With the Earth and quasi-moon taking turns passing each other, the quasi-moon appears to be moving around us," Ponterio said ...

What's special about Chiron's rings is that they're still forming; this marks the first time astronomers have ever seen a ...

Skywatchers will witness a rare event as the Moon, Mars, and Mercury appear close together in the twilight sky this October.