"A teenage boy leaves for Mars as a colonist with the Mars One space program and grapples with what he's leaving behind to do so"--

Twelve-year-old Mischa "Ish" Love's longtime dream has been to someday live on Mars, but when she collapses on the first day of seventh grade, Ish receives a diagnosis which threatens her future plans.

Captain Cat and Pilot Matt fly their spaceship off to Mars, where they make new friends among the stars.

Aoléon, Gilbert, Bizwat, Helios, and Zoot make it to their final destination--Cydonia--where Aoléon's parents are being held captive. 

Will they be able to rescue Aoléon's parents and save Earth from invasion? --Amazon.com

Mars is lonely--his father, the sun, denies him a pet and his sibling planets will not play with him--but when rovers Spirit and Opportunity arrive from Earth, he finally has playmates. Includes facts about the solar system, Mars, and the Mars rovers.

Crop circles magically appear in Farmer Johnson's field. A mysterious light sweeps over the night sky and awakens Farmer Johnson and Gilbert, the boy next door. Curious, Gilbert ventures out to discover the source of the light and stumbles into a beautiful Martian girl sitting in a crop circle. Join Gilbert and Aoléon in this exciting middle-grade science fiction and fantasy adventure!

"Jide and Petra are just two normal kids until they are selected to leave Earth and join their new alien classmates on an intergalactic research mission to Mars. Too bad Jide has no idea how she ended up in the program, seeing as the closest she wants to get to space is being a sci-fi writer. Petra, on the other hand, is the brains of the mission, but his helicopter parents make it clear he hasn't left their gravitational pull behind quite yet."--Provided...

Bell has spent his whole life--all eleven years of it--on Mars. But he's still just a regular kid--he loves cats, any kind of cake, and is curious about the secrets the adults in the US colony are keeping. Like, why don't they have contact with anyone on the other Mars colonies? Why are they so isolated? When a virus breaks out and the grown-ups all fall ill, Bell and the other children are the only ones who can help. It's up to Bell--a regular kid...

Six kids from around the world have been chosen for the first-ever mission to Mars and Miranda Regent is one of them. But as soon as the announcement is made, protesters worldwide claim the selection process was rigged -- and that Miranda was only chosen because she's American. Soon she's getting anonymous threatening messages. When the training base is attacked, it looks like Miranda is the intended target. Now the entire mission and everyone's lives...