Scientists could soon get a precise age for the giant impact basins on the moon, and a better understanding of the impact history of the young Earth, thanks to a new geological map of the moon's ...

Based on conventional thinking, all the material that makes up Quaoar’s dense ring should have condensed and formed a small moon. But it didn ... detailed map of the stars.

The "moon halo" or "moon dog" is fairly common — especially as the weather gets colder. The ring is actually an optical illusion. It is caused when the moon light refracts off ice crystals in a thin ...

SAN FRANCISCO (KGO) -- Have you ever seen a halo-effect or ring around the moon? Known as a moon ring, a winter halo, or a 22-degree halo, it's when "ice crystals suspended high above in thin ...

Until this week Saturn's small moon Rhea was the only known solid space object thought to have a ring. (Other known ringed bodies, such as Saturn, are mainly gaseous.) But a new study of optical ...

Spying a bright Moon with a ring around it high in a cold winter sky is a beautiful, and even spooky, sight. But you can spot Moon halos any time of year — and the same phenomenon occurs with ...