As a young boy, Stephen Hawking loved to read, stargaze, and figure out how things worked. He looked at the world and always asked, Why?

He never lost that curiosity, which led him to make groundbreaking discoveries about the universe as a young man. Even being diagnosed with ALS didn't slow Stephen down. Those questions kept coming. As his body weakened, Stephen's mind expanded--allowing him to unlock secrets of the universe and become one of the most famous scientists of all time.

Stephen always approached life with courage, a sense of humor, and endless curiosity. His story will encourage readers to look at the world around them with new eyes.