But what’s it like on other planets? There are eight planets in our solar system. The closest one to the sun is Mercury, then it’s Venus, Earth, Mars ... cameras to send images back to ...

A zircon crystal from a Martian meteorite unlocks secrets of a water-rich, dynamic Mars 4.45 billion years ago.

"The fact that terrestrial microbes are the Earth's best colonizers means we can never completely discount terrestrial ...