A charming Arizona town in the west was designated as the world's first International Dark Sky City, meaning it offers beautiful views of the Milky Way.

The vast valleys of Vallis Schrödinger and Vallis Planck demonstrate the incredible forces that shaped the face of the Moon.

That's good news for scientists and NASA, which is looking to land astronauts at the south pole on the near, Earth-facing ...

Light pollution is increasing globally, and having a negative impact on wildlife and humans. But the solutions are ...

Astronomers have discovered 'Bullseye,' a record-breaking galaxy with nine rings—six more than any other known galaxy.

Rraft through challenging whitewater rapids or hike along awe-inspiring cliffs with incredible views at this under-the-radar ...

The city of Flagstaff has taken big steps to preserve the clarity of its night sky. Find out the best ways to experience the ...