Rosetta Probe

"Rosetta isn't the first probe that's been sent to study comets, but it's the most successful as the first spacecraft to closely observe a comet as it approaches the sun. For 10 years, Rosetta moved around the Solar System, just so it could finally meet up with the right comet and release a lander to further study it. Readers learn about Rosetta's...journey from just an idea to a...robot with solar-charging batteries and other special features"--Amazon.com.