Heidi Hammel is an out-of-this world explorer. With her feet planted firmly on Earth, she takes trips millions of miles out into space. How does she do this? He

Chronicles the discovery and explorations of the planet Jupiter and discusses each of its moons, its place in the solar system, and more.

This book serves as a fascinating progress report on the outer solar system, offering a way to better appreciate the newest findings. It unlocks some of the mys

This is a completely updated and revised version of a monograph published in 2002 by the NASA History Office under the original title Deep Space Chronicle: A Ch