NASA's Mars rover Curiosity went out of its way to investigate a rock the likes of which it has never seen before on the Red Planet.
Newly released images taken by NASA's New Horizons spacecraft show a second range of mountains in Pluto's heart-shaped, bright region, named Tombaugh Regio.
An Arctic crater holds promise for figuring out how to spot something interesting on the moon or Mars, an astronaut says.
While all eyes are on Pluto, NASA's New Horizons mission is also beaming back intriguing views of the dwarf planet's largest moon, Charon. Continue reading →
Venus is looking hot. And it looks like lava might be causing it.
Titan's alien lakes of methane may be formed from the same processes that create sinkholes on Earth.
As NASA's New Horizons spacecraft careens through the solar system with Pluto in its cross-hairs, new detail in the dwarf planet's surface is popping into view at an ever increasing rate.
Glaciers beneath the dusty sands of Mars contain enough water to coat the planet with more than three feet of ice, a new study shows.
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