This book contains the expanded lecture notes of the 32nd Saas-Fee Advanced Course. The three contributions present the central themes in modern research on the cold universe, ranging from cold objects at large distances to the physics of dust in cold clouds.

Combining the latest scientific advances with storytelling skills unmatched in the cosmos, an award-winning astrophysicist and popular writer leads us on a tour of some of the greatest mysteries of our universe. In the constellation of Eridanus, there lurks a cosmic mystery: It’s as if something has taken a huge bite out of the universe. But what is the culprit? The hole in the universe is just one of many puzzles keeping cosmologists busy. Supermassive black holes, bubbles of nothingness gobbling up space, monster universes swallowing others—these and many other bizarre ideas are being pursued by scientists. Due to breathtaking progress in astronomy, the history of our universe is now better understood than the history of our own planet. But these advances have uncovered some startling riddles. In this electrifying new book, renowned cosmologist and author Paul Davies lucidly explains what we know about the cosmos and its enigmas, exploring the tantalizing—and sometimes terrifying—possibilities that lie before us. As Davies guides us through the audacious research offering mind-bending solutions to these and other mysteries, he leads us up to the greatest outstanding conundrum of all: Why does the universe even exist in the first place? And how did a system of mindless, purposeless particles manage to bring forth conscious, thinking beings? Filled with wit and wonder, What’s Eating the Universe? is a dazzling tour of cosmic questions, sure to entertain, enchant, and inspire us all.

A Barnes & Noble Discover Great New Writers Selection * An Indie Next Pick * An Indies Introduce Selection * One of Reader’s Digest’s Best Summer Books of 2019 * One of The Millions’ Most Anticipated Books of 2019 * One of Real Simple’s Best Books of 2019 “[This] might be the most optimistic post-apocalyptic story ever written. It’s Sleepless in Seattle meets Station Eleven.” —The A.V. Club Carson is on the East Coast when the electrical grid goes down. Desperate to find Beatrix, a woman on the West Coast who holds his heart, he sets off along a cross-country railroad line, where he encounters lost souls, clever opportunists, and those seeking salvation. Meanwhile, Beatrix and her neighbors begin to construct a cooperative community, working to turn the end of the world into the possibility of a bright beginning. Without modern means of communication, will Beatrix and Carson be able to find their way to each other? The answer may lie with one fifteen-year-old girl, whose actions could ultimately decide the fate of the lovers. The Lightest Object in the Universe is a moving story about adaptation and the power of community, imagining a world where our best traits, born of necessity, can begin to emerge.