Rosetta's weirdly shaped comet may have formed in a cosmic kiss inside a dirt cloud, thanks in part to Neptune's protective shadow.
Find out everything there is to know about planets and stay updated on the latest planet news with the comprehensive articles, interactive features and planet images at LiveScience.com. Learn more about space and the solar system as scientists continue to make amazing discoveries about planets.
The gassy world is "darker than charcoal" and may swallow up to 99 percent of the light its local star sheds upon it.
The upper cloud tops of Uranus are shot through with hydrogen sulfide, the gas that smells of rotten eggs.
One of Stephen Hawking’s final television projects was the documentary "Leaving Earth," airing March 25.
Long ago, Earth was an unformed doughnut of molten rock called a synestia, and the moon was part of its filling.
Supermassive black holes near the center of our Milky Way galaxy may have transformed "mini-Neptune" exoplanets into rocky "super-Earths," new research shows.
These dusty comets, speeding through distance space, are the smallest objects ever detected in another star system.
While it looks like an asteroid, the first interstellar object spotted passing through the solar system, called 'Oumuamua, may be more like a comet in disguise.
Data gathered by satellites circling Earth since 1997 come together in a breathtaking time lapse of our dynamic planet.
Mounting evidence suggests it's hard to imagine our solar system without the unseen world dubbed Planet Nine.
From insights into how moons are born to Saturnian lightning to a bizarre hexagon pattern, the Cassini mission has revealed some odd things about the ringed planet.
NASA's Cassini spacecraft broke up in Saturn's atmosphere this morning, bringing an end to its historic 13-year mission at the ringed planet that was marked by incredible discoveries.
In a new experiment, researchers have created a super-dense version of ice found deep within icy moons and colliding comets, and watched it form in nanoseconds.