Earth’s tallest mountains are impressive by human standards, but they are modest compared with the largest volcano in the solar system, which stands on Mars. Known as Olympus Mons, it rises so high ...

Standing at the base of Mount Everest and looking up accounts for one of the more humbling views available on Earth, yet the ...

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 ...

Learn how a young volcano on Mars stayed active for nine million years and what its changing lava reveals about Mars’ interior. Mars may look frozen and silent today, but near Pavonis Mons — a volcano ...