Find out about space stations, space shuttles, Voyager 2 and trips to Mars followed by a story about a mission to Mars where they find more than they expect...This fun, non-fiction reading book, with exciting colour photos and illustrations, will appeal to all older struggling readers. It focuses on a populsr topic to provide interest for an older age range and, as part of set 2 of the Thunderbolts series, will enagage the struggling readers through the use of a limited number of words