The rusty world is full of mysteries—and some of the solar system's most extreme geology. Learn more about Earth's smaller, colder neighbor.

Young Mars would have been a staggering place to explore. The Red Planet was covered in flowing rivers of both water and lava. At the time, a series of four volcanoes — Olympus Mons and the three ...

A person standing on the largest volcano in the solar system would never know it. Olympus Mons rises 70,000 feet over Mars on slopes too gentle to notice, and its summit pokes above most of the planet ...

NASA's Mars missions have uncovered liquid water, potential biosignatures, and a hidden volcano on the Red Planet. The post ...

Mars is the fourth planet from the sun and has a distinct rusty red appearance and two unusual moons. The Red Planet is a ...

How did young volcanoes on Mars form? This is what a recent study published in the journal Geology hopes to address as a team of scientists investigated the complex geological processes responsible ...

The warmest parts of Mars host a strange, thick layer of ice beneath the surface, and we may have finally figured out how it got there. It might have been shifted from the inside of the planet by ...

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Once upon a time, Mars was a world of cataclysms. Its namesake, the Roman war god, would likely have been pleased to see it in action: Volcanic cathedrals of flame unleashed armies of molten rock that ...