Seventh-grader Cat partners with Dani to study crop circles, but Dani secretly aims to disprove Cat's theory, and during their investigations they discover a dangerous rival also seeking answers who will stop at nothing to achieve their goal.

"When Agent Meow (also known as Pete the Cat) discovers an empty alien spaceship and accidentally launches into space, what else will he find? Early readers will love blasting off with Agent Meow in this otherworldly adventure!"--

"Indu, a boy from the moon, feels like he doesn't belong. He hasn't since he and his adoptive mom disembarked from their spaceship--their home--to live on Earth with their new blended family. The kids at school think he's weird; he has a crush on his pen pal, who might not like him back; and his stepfamily doesn't seem to know what to do with him. Worst of all, Indu can't even talk to his mom about how he's feeling because she's so busy. In a moment...

"Sky Patel-Baum, Area 51's latest arrival, thought she had finally figured out her strange new home. Sure, there are aliens everywhere, and her new BFF Elvis is from the planet Galzoria. True, she just witnessed her first UFO landing. But these special visitors aren't dropping by this planet for funsies.... Nope, they're here with a warning: Area 51 is in danger! A hunk of space junk is headed right for the base! And it's not just any hunk of junk--it's...

"The Marshmallow Martians spend a night at a museum searching for a unique object to take back to Planet Moop"--

"Don't you hate it when your archenemy launches your latest invention into space, accidentally creating a robot army that falls into the clutches of an evil alien emperor? Well, that's how Billie Blaster's day is going! The genius child of two famous scientists, Billie is an inventor extraordinaire and the star of the annual science fair, much to the disgust of her nemesis, Tiny Hector Glum. But now their rivalry has gone too far, and the fate of...

"A tiny Spaceman arrives on a new planet, ready to perform his monotonous tasks--collecting samples, labeling and filing them, and moving on to the next planet. But pausing to look around, the Spaceman is dazzled by the beauty of his surroundings. And when a large bird makes off with his ship, he's forced to venture out into this new world--planet Earth--on foot. Marveling at a varied landscape of flowers, butterflies, and other wondrous creatures,...

"Jeff the alien is ready to take his dino-friends on a quest to find their missing family. . .that is if he can remember where he put his warp drive first."--

"Ethan Fairmont and his friends attempt intergalactic communication and discover danger lurking close to home"--Provided by publisher. When sixth-grader Ethan and his friends discover evil aliens, known as light-thieves, are infiltrating Ferrous City, they use their science skills to save their town and their alien friend, Cheese.

"The extraterrestrial girls are back! With their former school compromised, exposing Tara, Misako, Summer, and Kat, to possible danger from unknown alien forces, they all must relocate to a new hidden school--The School for Extraterrestrial Boys! Located on a hidden island in the arctic north, the new campus has a mysteriously warm summer climate, a beautiful lake, and dozens of sinister mysteries! The girls are staying in what appears to be summer...