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 ...

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

On some Mars images, Olympus Mons does not look dramatic at first glance. It sits there quietly, a wide pale rise against rust coloured plains. No sharp peak. No obvious violence. Only when scale is ...

Boulder, Colo., USA: What appears to be a single volcanic eruption is often the result of complex processes operating deep beneath the surface, where magma moves, evolves, and changes over long ...