The story has wonderful messages of perseverance and friendship, but that takes a backseat to the gorgeous illustrations. Ben Hatke has a blast creating the inhabitants of this distant planet, going so far as to create guidebook entries about some of them. The illustrations are detailed and merit inspection.
Zita the Spacegirl is fairly long and is the first in a series, so it would be a worthwhile investment for your library. It will appeal to a variety of readers: lovers of fantasy, adventure, and graphic novels will all be clamoring to borrow it.