Neil deGrasse Tyson is a rare breed of astrophysicist, one who can speak as easily and brilliantly with popular audiences as with professional scientists. Now that NASA has put human space flight effectively on hold-with a five- or possibly ten-year delay until the next launch of astronauts from U.S. soil-Tyson's views on the future of space travel and America's role in that future are especially timely and urgent. This book represents the best of Tyson's commentary, including a candid new introductory essay on NASA and partisan politics, giving us an eye-opening manifesto on the importance of space exploration for America's economy, security, and morale. Thanks to Tyson's fresh voice and trademark humor, his insights are as delightful as they are provocative, on topics that range from the missteps that shaped our recent history of space travel to how aliens, if they existed, might go about finding us.