The volcano stands at 29,600 feet and stretches for 280 miles, and evidence shows it has been active for a very long time.

Researchers believe dark rocks at the site of a future Mars rover landing mission may be left over from ancient volcanic eruptions, and may be protecting signs of life — if there ever was life on Mars ...

From arachnid-like formations and mysterious blobs to an underground ocean and a giant volcano, here are our 10 favorite things scientists discovered on Mars this year.

a doctoral student researching the geological history of Mars at the Natural History Museum in London, said in a statement. "It likely came from a really explosive volcano which launched ash high ...

Living on Mars will be no easy feat. Building viable living quarters would require an inflatable habitat that can be covered ...

Mars is a strange place and any humans born there are bound to look radically different over thousands or even hundreds of ...

What are those mysterious holes on Mars? The holes, aka pits, are located on the flanks of ancient volcanoes in Mars's Tharsis region, the largest volcanic region on the red planet and home to ...

the pit is part of a series found on the flanks of volcanoes in the Tharsis region of Mars. It appears to be a vertical shaft, prompting speculation about its origin and composition. Pits and ...