An increasing number of people are out chasing the northern lights and other celestial phenomena in northern Minnesota.

For most of human history, the Milky Way has been a hazy band of light, a backdrop rather than a map. Now, by reading the ...

Galaxy clusters are the most massive objects in the universe held together by gravity, containing up to several thousand ...

Astronomers have employed NASA's Chandra spacecraft to perform X-ray observations of a massive galaxy cluster known as SPT-CL ...

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...