Mars carries a landmark that dwarfs anything found on Earth: a single volcanic mountain so large it would blanket an entire U ...

“Noctis Mons” is the seventh-largest volcano on Mars, the biggest being this one pictured—Olympus Mons (artist's impression). Scientists have discovered a massive, deeply eroded giant shield volcano ...

Deep in Ethiopia’s Danakil Depression, the expedition climbs Erta Ale, an active shield volcano famous for its persistent lava lake. Instead of watching safely from a distant viewpoint, their local ...

Deep below the Earth's surface, magma is churning and flowing into the Axial Seamount, an underwater shield volcano about 300 miles off the coast of Oregon. As the volcano grows and tremors increase, ...

Mars is known for its volcanoes, some of which dwarf the largest volcanoes on Earth. And, although Mars’ volcanoes have been extinct or dormant for millions of years, there’s growing evidence for some ...