The National Park Service is hosting its annual Death Valley Dark Sky Festival beginning Friday, Feb. 21 through Sunday, Feb.

These night runs, races, and events under full moons, meteor showers, and starry skies will make memories for a lifetime.

Arizona's dark skies are a haven for astronomers and photographers. Some communities are fighting to keep them that way.

In January, a 15-year-old boy was rescued from a southern Utah trail, but left his backpack behind. Weeks later, a father and ...