Sourcebooks, 2020, 40 pp., Hardcover. $17.99. www.sourcebooks.com

In this sweet solar system book, Mars is lonely and just wants someone to play with, but the planets are all too busy. That is, until Earth sends her little brother Mars his first friends: the rovers Spirit and Opportunity! With its darling prose and charming illustrations, this book offers a new take on the Mars rovers’ stories and includes educational back matter with an abundance of information about the solar system, Mars, and his real-life pets — NASA’s rovers! Could there be life on Mars? Read on to find out! For ages 4 to 8.