Cloud-watchers can talk all about the interesting shapes they've noticed over the years ... which look like a pattern of ocean waves in the sky. Kelvin-Helmholtz clouds, also known as fluctus ...

Interspecies Love Letter: Sky Painting from EARTH to SPACE will light up the sky over the Kennedy Center later this month. Rendering Cai Studio Artist Cai Guo-Qiang has made a name for himself ...

A prehistoric map of the night sky has been discovered ... Deneb and Altair. Hanging over its shoulder is what appears to be a map of the Pleiades, the cluster of stars sometimes called the Seven ...