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

About 4.5 billion years ago, our planet was impacted by a Mars-sized body (Theia), which led to the formation of the Moon. According to current theories, water was introduced to Earth and the ...

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 ...