Every object in our Solar System ... trapping the Sun’s heat inside. The surface of Venus is dry and rocky with lava flows across parts of the planet. It takes Venus 243 Earth days to spin ...

Mars is the seventh largest planet in our solar system and about half the diameter of Earth. Its surface gravity is 37.5 percent of Earth’s. Mars rotates on its axis every 24.6 Earth hours ...

Earth is the fifth largest planet in our solar system, and it's the only one known for sure to have liquid water on its surface. Earth is also unique in terms of monikers. Every other solar system ...

One of the ways we've tried to keep track of this relentless recasting of our planet ... surface at a resolution of 10m (the size of each pixel in an image). Terabytes of data are coming down ...

Every 789 days, Mars ... as seen from Earth. That makes the Red Planet's surface features more easily observed by amateur astronomers and astrophotographers using good backyard telescopes ...

"We are currently using samples that are often smaller than the tip of your thumb to extrapolate the entire evolutionary history of a planet. You would not predict the existence of the Himalayas ...