space and time

"When Albie's mother dies from cancer, his father explains that she may be alive in a parallel universe, so he decides to universe-hop and find her with the help of a banana, a laptop, and a box"--OCLC.

"All it takes is one hit on the football field, and suddenly Ash's life doesn't look quite the way he remembers it. Impossible though it seems, he's been hit into another dimension--and keeps on bouncing through worlds that are almost-but-not-really his own. The changes start small, but they quickly spiral out of control as Ash slides into universes where he has everything he's ever wanted, universes where society is stuck in the past . . . universes where he finds himself looking at life through entirely different eyes"--Publisher's description.

"Among the ashes of a dying world, an agent of the Commandant finds a letter. It reads: Burn before reading. Thus begins an unlikely correspondence between two rival agents hellbent on securing the best possible future for their warring factions. Now, what began as a taunt, a battlefield boast, grows into something more. Something epic. Something romantic. Something that could change the past and the future. Except the discovery of their bond would mean death for each of them"--OCLC.

"Sofia buys a skeleton key from spooky store Frightville that promises to open any lock. There's a mystery trunk in the attic of the big, old house her dad is turning into a bed-and-breakfast. Sofia is dying to see what's inside. To her delight, the key works on the trunk! But her joy quickly turns to terror when it seems like something may have been released from the trunk. She hears odd noises in the middle of the night and sees strange things around the house. Is it her imagination? Or could it be a ghost?"--OCLC.

"Set in 1993, teenage Claire navigates the eerie town of Indianola, Texas, where a fissure in time and space has made nothing is as it seems"--Provided by publisher.

"Gamora gets mixed up in a dangerous plan to pit Korath the Pursuer and Nebula against one another as they compete to become Thanos' new general"--Publisher.

"Among the ashes of a dying world, an agent of the Commandant finds a letter. It reads: Burn before reading. Thus begins an unlikely correspondence between two rival agents hellbent on securing the best possible future for their warring factions. Now, what began as a taunt, a battlefield boast, grows into something more. Something epic. Something romantic. Something that could change the past and the future. Except the discovery of their bond would mean death for each of them"--OCLC.

"In science fiction, time machines let people travel backward in history and forward to the future. How could one of these time-traveling devices be created? Scientists have some ideas, which include using spaceships and black holes. Discover the science and technology behind what it would take to make a real-life time machine!"--Provided by publisher.

Simon and Brad's fireball adventures take them to ancient China where they are exposed to incredible practices of mind control.

"Once again, Artemis will have to pair up with his old comrade, captain Holly Short, to track down a missing demon and rescue him before the time spell dissolves and the lost demon colony returns violently to Earth"--OCLC.