Volcanoes in space
Topography of Mars
Mars has multiple large volcanoes and other volcanic features. Tharsis Montes (top left) is a region with four large volcanoes, including the largest volcano in the Solar System, Olympus Mons.
Venus
Maat Mons, a volcano on the surface of Venus, may still be active.
Olympus Mons
Olympus Mons on Mars is the largest volcano in the Solar System.
Volcanoes of mars: Tharsis montes
Olympus Mons
Ascraeus Mons
Olympus Mons
Olympus Mons is a shield volcano that is the largest volcano in the Solar System. It is roughly 100x the size of Earth's largest volcano, Mauna Loa. Olympus Mons could possibly still be active. It is a hotspot volcano.
Arsia Mons
Ascraeus Mons
Olympus Mons
Arsia Mons is the southernmost volcano on the Tharsis bulge near the equator of Mars. It is also a shield volcano and is the second largest in the Solar System, which is 30x the size of Mauna Loa. The Tharsis Montes volcanoes are all hotspot volcanoes in a straight line, which could be evidence of plate tectonics.
Pavonis Mons
Ascraeus Mons
Ascraeus Mons
Pavonis Mons is the middle of the three Tharsis Montes. It has been proposed as a site to build a space elevator due to its size and position near the equator. It is the smallest of the Tharsis Montes and is covered in fine dust that causes it to have a high albedo.
Ascraeus Mons
Ascraeus Mons
Ascraeus Mons
Ascraeus Mons has lava aprons that are remnants of lava vents near the base of the volcano. Other interesting features include collapsed lava tubes.
Volcanoes of venus
Venus: A Volcanic Planet
Venus has the highest density of volcanoes of any body in the Solar System. It has been estimated that it contains tens to hundreds of thousands of volcanoes on its surface. These volcanoes may still be active, and the surface may undergo a complete restructuring every several hundred thousand years. Evidence for this includes the lack of many impact craters and expansive flood basalts.
The volcanoes of Venus spew noxious gases that form the highly dense, carbon dioxide-rich atmosphere. The atmosphere is so dense with gases that the atmospheric pressure is 90x that of Earth's.
Volcanoes of TRITON
Triton: Moon of Neptune
Triton has cryovolcanoes that erupt water and other gases onto the surface. Triton has a crust of frozen nitrogen ice that traps heat from sunlight. Occasionally enough heat builds up to melt the ices and gases will expand to the surface, causing an eruption of water, ammonia, nitrogen, and ice. The material flows over the surface much like lava, but is made of water and gas.