July's third quarter moon phase occurs at 8:38 EDT (0038 GMT) on July 17. At this moment, skywatchers in the northern ...

The largest dark sky sanctuary in the world is 2.4 million acres of volcanic landscape, deserts, and mountains. Learn how to plan your trip.

A decade of observations by NASA’s Hubble Space Telescope has produced the sharpest and most detailed images of the Andromeda galaxy. Zoom in and explore.

I’m not sure whether it was elementary school science classes or Fred Flintstone’s Brontosaurus burgers that made the giant herbivore one of the most recognizable dinosaurs to me as a kid. But for ...

The Perseid meteor shower starts July 17 and peaks Aug 12-13, but a bright full moon will hinder visibility, making the best times to before and after its peak.