"Dashiell Gibson, who lives on Moon Base Alpha, has to solve a murder of one of the moon's most prominent doctors"--

"When ten-year-old Astra and her family move to a new planet, she must save the spaceship and its crew from man-eating cakes, aliens, and more"--

When all hope for a peaceful coexistence between humankind and aliens seems lost, Eva Nine, with help from an unlikely ally, tries to thwart the evil Loroc's ultimate plan for life on Orbona.

When a disgruntled boy sees his mother being kidnapped by Martians, he realizes he loves her and will go to any lengths to protect her.

After a year on Mars, a young boy and his family migrate to the planet Choom, but the inhabitants of Choom, the Zhuri, who look like giant mosquitoes, don't really like humans and it up to the boy and his family to change their minds if they hope to survive.

Raised underground by a robot, twelve-year-old Eva Nine finally finds all she ever wanted in the human colony of New Attica, but something very bad is going on there and unless Eva and her friends stop it, it could mean the end of life on Orbona.

To save his father, a Coalition scientist protecting a precious resource, after their ship is attacked, Leo stows away on a strange ship of mercenary space pirates and must decide who to trust- human or alien-to stay alive.

Jasper and his friends must find a way to make peace between Earth and the Youli aliens before the Youli destroy the human race.

While no cat can be called ordinary, Leonard is definitely no ordinary cat. In fact, he is an alien, sent on an earthly sabbatical and mistakenly given the body of a rather scruffy stray. Rescued by animal lover Olive, Leonard does his best to study the humans he hoped to join while contending with the indignities of hair balls, kitty litter, and a compulsion to shred the curtains. And as he collects experiences - shared cheese sandwiches, jokes,...

When her mother is abducted by aliens on Christmas Eve (or "Smekday" Eve since the Boov invasion), 11 year-old Tip hops in the family car and heads south to find her and meets an alien Boov mechanic who agrees to help her and save the planet from disaster.