Seven planets are set to appear in the night sky this month in a rare full planetary alignment. Mars, Jupiter, Uranus, Venus, Neptune, Mercury and Saturn will appear in a row on the evening of 28 ...

A mysterious radio signal from a distant planet has sparked excitement among astronomers, hinting at the tantalizing possibility of extraterrestrial life.

Jupiter and Mars will appear to make ultraclose approaches to the moon on two nights this week. Here's how to get the best ...

The Hubble Space Telescope has been used to study 25 hot Jupiters. It has helped to answer "questions important to our understanding of exoplanet atmospheres," according to the Hubble team. Credit: ...