Back to the Moon Back to the Moon Back to the Moon is a science fiction novel and Homer Hickam's first fictional book. Published in June 1999, Hickam wrote Back to the Moon using insider information he learned from NASA. The prologue of the novel begins with a dramatized account of the second EVA of Apollo 17. Astronaut Jack Schmitt discovers orange soil in Shorty Crater at the very end of the EVA and gathers samples in a race against time to get back to the LEM. Meanwhile, Wernher von Braun is watching the end of the mission on TV with other NASA engineers.
Callisto (moon) facilitate remote exploration of Europa, or be an ideal location for a Jovian system waystation servicing spacecraft heading farther into the outer Solar System, using a gravity assist from a close flyby of Jupiter after departing Callisto. In December 2003, NASA reported that a manned mission to Callisto might be possible in the 2040s. Callisto (moon) </math>.</ref> Callisto (Jupiter IV) is the second-largest moon of Jupiter, after Ganymede. It is the third-largest moon in the Solar System after Ganymede and Saturn's largest moon Titan, and the largest object in the Solar System not to be properly differentiated. Callisto was discovered