Hawaiian telescope spots a new dwarf planet beyond Neptune
Pluto has another friend.
Curiosity rover may sample Mars water
NASA hopes to shed light on one of the Red Planet's more elusive substances.
Venus' electric wind stripped its atmosphere of water
As if the planet wasn't already hostile to humans.
Scientists find the largest known planet to orbit two stars
Kepler-1647b is as big as Jupiter, but it's warmed by two suns.
Watch Mars make its closest approach to Earth in 10 years
Tune in tonight if you want a rare good look at the Red Planet.
Kepler telescope finds its largest-ever batch of planets
NASA has 1,284 more alien worlds to study.
Watch Mercury cross the Sun starting at 7AM Eastern
You can view this rare celestial event online.
Venus probe's first detailed results reveal strange clouds
Akatsuki nearly didn't make it, but it's already shedding light on our nearest planetary neighbor.
Scientists find rare 3-star system with a hot Jupiter-like planet
It's proof that the universe is full of surprises.