Journeying to Mars with Sylvie and Elliot to search for Sylvie's missing father, dinosaur-human hybrid Sawyer discovers that Mars has been trying to bully Pluto out of the solar system, a conflict that is addressed through a planetary soccer match.

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...

While waiting to leave Mars before it burns up just like the Earth before it, Liam and his friend Phoebe discover some facts about time and space and realize that the human race is just one of the races trying to survive in space.

As a member of a young crew of astronauts on Mars, the reader is faced with real dangers and must make decisions that will determine the success of the mission.

A harrowing, pulse-pounding race for survival that New York Times bestselling author D. J. MacHale says "will leave you breathless."

Michael Prasad knows he shouldn't go out on the Mars surface alone. It's dangerous. His parents have forbidden it. And the anxiety he feels almost every time he puts on a spacesuit makes it nearly impossible for him to leave the safety of the colony.

But when his best friend, Lilith, suggests

...

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.

"Come with Max as he takes off on his next exciting science adventure, this time joining astronauts on the first human mission to Mars. Equipped with a specially designed spacesuit, Max sniffs for signs of microscopic life. Will he find any? Read the exciting story to find out, and to learn how his trip to Mars helps his young friend Tori reflect on the beauty and fragility of our own planet Earth. Max Goes to Mars is more than just a fun story. Educationally...

Fifth-graders Zoe, Jaden, and Caleb and the rest of the Hubble Middle School S.M.A.R.T.S. club are participating in a Mars colony simulation sponsored by a private company, but when their equipment starts malfunctioning the kids suspect sabotage--and their chief suspect is Barrett and the rival Mad Scientists from the Edison Middle School.

"A young astronaut is trying to find life on Mars, but he's made a very big oversight"--

"Twelve-year-old Alice Dare is one of 300 seven- to sixteen-year-olds evacuated to Mars to attend school and train as soldiers, safe from the war with Earth's invading aliens, the Morrors, but when all of the adults and robots mysteriously disappear, the youths must survive on their own" --