Callisto, the third largest moon in the entire solar system, orbits Jupiter from about 1.2 million miles away. The rocky ...

NASA’s Lunar Trailblazer is set to launch on February 26 aboard a SpaceX Falcon 9 rocket from Kennedy Space Center. Built by Lockheed Martin, it aims to study water ice on the Moon, potentially ...

And while Earth, of course, has plenty of active volcanoes of its own, eruptions on the Jovian moon have ... heat within the moon, keeping its subsurface crust in liquid magma form that seeks ...

While our moon is relatively calm, Io is considered to be the most volcanically active world in our solar system. And while Earth, of course, has plenty of active volcanoes of its own, eruptions on ...