About 4.5 million years ago, a great cosmic dog kicked past our Solar System – and its effects may still be seen today.

Using some of the world's most powerful telescopes, a team of researchers found more than 280 galaxies stretched in a line ...

Critics argue the satellites, billed as a way to harness solar energy at night, could hamper sky observations and may pose a ...

A surprisingly mature spiral galaxy named Alaknanda has been spotted just 1.5 billion years after the Big Bang—far earlier ...

Indian astronomers using NASA's James Webb Space Telescope (JWST) have discovered a stunning grand-design spiral galaxy that ...

Astronomers have discovered 53 new supermassive black hole-powered quasars that are blasting out jets of matter at near light ...

A scientist analyzing Fermi telescope data found a strange glow around the Milky Way that looks like it could be coming from ...

Colorado winters in the mountains are beautiful, but not every view can be seen during the day. There are times at night when the full moon illuminates a surreal snowscape, creating beautiful shapes ...

More than 100 years after its existence was predicted, scientists report that they have, for the first time, seen dark matter ...

Discover the top U.S. spots for stargazing and nocturnal tourism. From Bend to Sedona, find dark-sky destinations, rentals, ...

Everything you see around you—your phone, your cat, the Earth, the stars—makes up just 15% of the mass in the universe. The ...

In my last column, I highlighted some of the best objects to view in the night sky through the end of the year. However, ...