The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

A conjunction is when two or more planets come close together in the sky. On the evening of Jan. 21, Mars, Jupiter, Uranus, Neptune, Venus and Saturn will align in the sky, according to Starwalk.space ...

Skywatchers: A six-planet alignment peaks this week as Mars, Jupiter, Uranus, Neptune, Venus, and Saturn come together for ...

NASA Voyager 1 probe discovers Saturn’s moon, Epimetheus. Saturn would be the last planet Voyager 1 would visit before ...

"We were definitely surprised by the 'kiss' part of kiss-and-capture. There hasn't really been a kind of impact before where the two bodies only temporarily merge before re-separating!" ...

Researchers accounted for the previously overlooked structures of the dwarf planet and moon in computer simulations of a ...

This week’s aspects echo both on a very personal level, as Venus lingers close to Saturn in sensitive Pisces, and on a ...

New research suggests that billions of years ago, Pluto may have captured its largest moon, Charon, with a very brief icy "kiss." The theory could explain how the dwarf planet (yeah, we wish Pluto ...