A study by Dr. Martin Ebert and Dr. Martina Kölbl-Ebert examined the remains of some 4,200 Tharsis fossil specimens. They ...

NASA Odyssey orbiter snapped a first-ever image of a Mars volcano peeking above some clouds before dawn. It’s twice as tall as Earth’s largest volcano ...

Arsia Mons, which dwarfs Earth's tallest volcanoes, and its two neighboring volcanoes are often surrounded by water ice clouds, especially in the early morning. The image released Friday marks the ...

Mars is an interesting planet with many unexpected features. For one, it is not a sphere, but rather what is called a ...

Tharsis can never stop reminding you that you don't have control over its interstellar disaster, just the illusion of it. Every time I watched my ship fall apart, ...

The Tharsis region is just right of center, with the three volcanoes Ascraeus, Arsia and Pavonis Mons in a diagonal line and Olympus Mons to their left. The black circles are impact craters larger ...

The Tharsis region is about 3,100 miles (5,000 kilometers) wide and rises up to 4.4 miles 7 (km) high, excluding its massive shield volcanoes, which rise even higher.

One of Mars' tallest volcanoes peeps over a thick layer of clouds, in Odyssey’s first picture of Arsia Mons peering over the Red Planet's horizon.

Scientists may have pinpointed a massive, oddly shaped volcano taller than Mount Everest on the surface of Mars — and it has been hiding in plain sight for decades, according to new research.

The southernmost of the Tharsis volcanoes, Arsia Mons is also the cloudiest of the three. The clouds, which form when air expands as it blows up the sides of the mountain and rapidly cools, ...

New photos from the European Space Agency's Mars Express orbiter give us our best look yet at a giant ravine on the Red Planet. The dark "scar" was likely birthed by a gigantic blob of magma ...