A swarm of large asteroids likely lurking around Venus could one day pose an "invisible threat" to Earth if left unchecked, ...

Satellites, our eyes in the skies about 22,000 miles up, play a crucial role in predicting and tracking potentially ...

This month will usher in two separate conjunctions — one between the moon and a rarely-visible Mercury, and another between ...

The map, released Thursday (June 5) by scientists at the Cosmic Evolution Survey collaboration , covers a 0.54-degree-squared ...