The #1 New York Times bestselling author of Astrophysics for People in a Hurry takes readers on an entertaining and edifying tour of the universe. In Neil deGrasse Tyson's delightful journey through the cosmos, his fictional character Merlin responds to popular questions asked by adults and children alike. Merlin, a timeless visitor from Planet Omniscia in the Andromeda Galaxy, has observed firsthand many of the major scientific events of...