The 4 Percent Universe: Dark Matter, Dark Energy, and the Race to Discover the Rest of Reality

In the past few years, a handful of scientists have been racing to explain a disturbing aspect of our universe: only 4 percent of it consists of the matter that makes up you, me, our books, and every planet, star, and galaxy. The rest—96 percent of the universe—is completely unknown. Richard Panek tells the dramatic story of how scientists reached this cosmos-shat More »