*Fully revised and updated for the 21st century* The #1 New York Times bestselling author of Astrophysics for People in a Hurry takes readers on an odyssey into the deepest, darkest depth of the universe and back again with his extra-terrestrial tour guide, Merlin. Merlin is a timeless visitor to Earth from the planet Omniscia in the Andromeda galaxy, and he has observed first-hand many of the major scientific events of Earth's history - from the Big Bang to the extinction of the dinosaurs and beyond. In Merlin's Tour of the Universe, Merlin responds to popular questions asked by adults and children alike about the universe.
