black holes (astronomy)

Explains what astronomers have learned about black holes.

Readers learn about stars, including their movement and composition.

Did you know that Earth is inside a galaxy called the Milky Way? The Milky Way is made of billions of stars. Readers learn about this galaxy in Milky Way.

Readers learn facts about black holes.

Examines black holes within the universe, explains how they form and their effects on objects, and plays with the idea of time travel and the origins of the universe.

In high school, everyone needs the occasional 'do-over.' To spare other kids from humiliating and totally un-cool high school experiences, seniors Virgil and his buddies, Charlie and Zeke, invent the ultimate time machine. But when they accidentally open a black hole, they learn that turning back the clock can create a massive mess.

"Black holes are some of the most mysterious objects in the universe! They have a gravitational pull that's so strong that nothing can escape them. Black holes grow larger by attracting anything that's near them, including entire stars"--Provided by publisher.

"Welcome, Agent 359. This file is full of top-secret information about black holes. Learn the basics of how black holes form, their different sizes, and how they were found. Then, discover what scientists are learning about them now. What will you do with our new knowledge? Good luck and remember these are top secret space files!"--.

"[The author] discusses uniting the time-warping ideas of general relativity and the perplexing uncertainties of quantum mechanics. He reveals the mind of a scientist at work . . . [as he] traces the ongoing adventure of his own cutting-edge research, investigating whether all black holes could eventually turn into white holes, equally compact objects in which the arrow of time is reversed. Guiding us beyond the horizon, he invites us to experience the fever and the disquiet of science--and the strange and startling life of a white hole"--Provided by publisher.

"Historical photographs combined with . . . narration bring the story of the first photograph of a black hole to life. Kids will learn why it was so hard to take a photo of something so dark it does not reflect light, and so far away it could barely be reached. Primary source quotations bring the . . . accomplishment to life"--Provided by publisher.