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.
The primordial planet believed to have smashed into baby Earth, creating a cloud of debris that eventually formed into the moon, was chemically a near-match to Earth.
As far as rocks on any planet go, this formation looks fascinating -- but these rocks are on Mars and they hold clues to TWO periods of water on the red planet.
Two vast underground domes are buried under central Australia that researchers have realized are the scars of the biggest and most powerful asteroid impact yet found on Earth.
The moon's past was livelier and more complex than scientists had thought, new results from China's first lunar rover suggest.
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