Cassiopeia (pronounced kass ee oh pee' uh ... Eicher saw an owl figure in the cluster's overall shape, whose eyes were the two brightest stars. He dubbed it the Owl Cluster, and it's carried ...

I pick out North America’s celestial highlights for the week ahead (which also applies to northern hemisphere mid-northern latitudes).

NASA’s Chandra X-ray Observatory released 25 new images. Since Chandra’s launch on July 23, 1999 it discovers exotic new phenomena and examines old mysteries of our universe.

The Heart Nebula, officially called IC 1805, is a cloud of gas and dust located about 7,500 light-years away in the ...