Mars' First Friends
Come on Over, Rovers!Book - 2020
"Even with a solar system full of family, Mars has no one to play with. The planets are too busy, and he's lonely...until Earth sends her little brother his first friends, the rovers Spirit and Opportunity!" -- Dust jacket.
Publisher: Naperville, IL : Sourcebooks Wonderland, 
Characteristics: 1 volume (unpaged) : color illustrations ; 27 cm