Now on audio! The best-selling exposé that ends the decades-old controversy surrounding the infamous and mysterious crash of an unidentified aircraft at Roswell, New Mexico, in 1947.

Skinwalkers at the Pentagon unmasks the massive scope of the Pentagon’s landmark UFO study that ran from the Defense Intelligence Agency in Washington, DC. The Advanced Aerospace Weapon System Applications Program or AAWSAP investigated the “Tic Tac” and other “nuts and bolts” UFO events, analyzed intrusions of UFOs onto US military bases, as well as probed the plethora of bizarre phenomena that government investigators encountered on Skinwalker Ranch.

Communion is the iconic classic in which Whitley Strieber describes his 1985 close encounter experiences. This book, which fundamentally changed the way we understand close encounters and alien abductions, is presented here with a new introduction by the author. Do not miss this great classic and the powerful introduction that explores the situation as it stands today—even more provocative and important now, as official sources are admitting that UFOs are real unknowns and that they seem to have something to do with close encounters.

For four aging men in the terror-stricken town of Milburn, New York, an act inadvertently carried out in their youth has come back to haunt them. Now they are about to learn what happens to those who believe they can bury the past - and get away with murder. Peter Straub's classic best seller is a work of "superb horror" ( Washington Post Book World) that, like any good ghost story, stands the test of time - and conjures our darkest fears and nightmares.

Millions of people are confronting aliens that authorities say do not exist. Now Whitley Strieber, author of the #1 best seller Communion, which detailed his own close encounters, returns with The Grays, a mind-bending journey behind the curtain of secrecy that surrounds the subject of aliens. This audiobook will make you think deeply, not only about the mystery of who the Grays are, but who exactly we are.

From the Audie-nominated narrator of The Martian. In eleven years' time, a million members of an alien race will arrive at Earth. Years before they enter orbit, their approach will be announced by the flare of a thousand flames in the sky, their ships' huge engines burning hard to slow them from the vast speeds needed to cross interstellar space. These foreboding lights will shine in our night sky like new stars, getting ever brighter until they outshine even the sun, casting ominous shadows and banishing the night until they suddenly blink out.

Nancy Kranich (played by Emmy-nominated actress Natasha Lyonne of Russian Doll and Orange Is the New Black) is a night nurse on an orbiting space station. But Nancy hates her job, is sick of space, and longs to find adventure and a safe place to smoke cigarettes that won’t blow everyone up. But when Nancy gets caught up in an outer-space conspiracy involving President Kennedy, former vice-president Richard Nixon, and an intergalactic object that could change the course of history, she gets way more adventure than she bargained for.

With the support of former White House Chief of Staff John Podesta, investigative reporter Leslie Kean draws on her research to separate fact from fiction and to lift the veil on decades of U.S. government misinformation. Throughout, she presents irrefutable evidence that unknown flying objects - metallic, luminous, and seemingly able to maneuver in ways that defy the laws of physics - actually exist.

Bill Bryson has been an enormously popular author both for his travel books and for his books on the English language. Now, this beloved comic genius turns his attention to science. Although he doesn't know anything about the subject (at first), he is eager to learn, and takes information that he gets from the world's leading experts and explains it to us in a way that makes it exciting and relevant.

The Viking Age - from 750 to 1050 saw an unprecedented expansion of the Scandinavian peoples into the wider world. As traders and raiders, explorers and colonists, they ranged from eastern North America to the Asian steppe. But for centuries, the Vikings have been seen through the eyes of others, distorted to suit the tastes of medieval clerics and Elizabethan playwrights, Victorian imperialists, Nazis, and more. None of these appropriations capture the real Vikings, or the richness and sophistication of their culture.

With his signature wit and thought-provoking insights, Neil deGrasse Tyson - one of our foremost thinkers on all things space - illuminates the past, present, and future of space exploration and brilliantly reminds us why NASA matters now as much as ever. As Tyson reveals, exploring the space frontier can profoundly enrich many aspects of our daily lives, from education systems and the economy to national security and morale.

Millions of people visit xkcd.com each week to read Randall Munroe's iconic webcomic. His stick-figure drawings about science, technology, language, and love have a large and passionate following. Fans of xkcd ask Munroe a lot of strange questions. What if you tried to hit a baseball pitched at 90 percent of the speed of light? How fast can you hit a speed bump while driving and live? If there were a robot apocalypse, how long would humanity last?

The number-one best-selling author of The Future of the Mind traverses the frontiers of astrophysics, artificial intelligence, and technology to offer a stunning vision of man's future in space, from settling Mars to traveling to distant galaxies. Formerly the domain of fiction, moving human civilization to the stars is increasingly becoming a scientific possibility - and a necessity. Whether in the near future due to climate change and the depletion of finite resources or in the distant future due to catastrophic cosmological events, humans will one day need to leave Earth.

In this fascinating foray into the centuries-old relationship between science and military power, acclaimed astrophysicist Neil deGrasse Tyson and writer-researcher Avis Lang examine how the methods and tools of astrophysics have been enlisted in the service of war. "The overlap is strong, and the knowledge flows in both directions," say the authors, because astrophysicists and military planners care about many of the same things: multi-spectral detection, ranging, tracking, imaging, high ground, nuclear fusion, and access to space. Tyson and Lang call it a "curiously complicit" alliance.

In Cosmos, the late astronomer Carl Sagan cast his gaze over the magnificent mystery of the Universe and made it accessible to millions of people around the world. Now in this stunning sequel, Carl Sagan completes his revolutionary journey through space and time.

With his signature wit and thought-provoking insights, Neil deGrasse Tyson - one of our foremost thinkers on all things space - illuminates the past, present, and future of space exploration and brilliantly reminds us why NASA matters now as much as ever. As Tyson reveals, exploring the space frontier can profoundly enrich many aspects of our daily lives, from education systems and the economy to national security and morale.

This engaging memoir reveals the true story of the Search for ExtraterrestrialIntelligence (SETI), and discloses what we may very soon discover. Chronicling the program’s history with insight and humor, SETI senior astronomer Seth Shostak assures us that if there is sentient life in the universe, we are within decades of picking up its signal.

End Times is a compelling work of skilled reportage that peels back the layers of complexity around the unthinkable - and inevitable - end of humankind. From asteroids and artificial intelligence to volcanic supereruption to nuclear war, veteran science reporter and TIME editor Bryan Walsh provides a stunning panoramic view of the most catastrophic threats to the human race.

Since its formation nearly five billion years ago, our planet has been the sole living world in a vast and silent universe. Now, Earth's isolation is coming to an end. Over the past two decades, astronomers have discovered thousands of "exoplanets" orbiting other stars, including some that could be similar to our own world. Studying those distant planets for signs of life will be crucial to understanding life's intricate mysteries right here on Earth. In a firsthand account of this unfolding revolution, Lee Billings draws on interviews with top researchers.

Beyond dares to imagine a fantastic future for humans in space - and then reminds us that we're already there. Human exploration has been an unceasing engine of technological progress, from the first homo sapiens to leave our African cradle to a future in which mankind promises to settle another world. Beyond tells the epic story of humanity leaving home - and how humans will soon thrive in the vast universe beyond the Earth.

Bill Bryson has been an enormously popular author both for his travel books and for his books on the English language. Now, this beloved comic genius turns his attention to science. Although he doesn't know anything about the subject (at first), he is eager to learn, and takes information that he gets from the world's leading experts and explains it to us in a way that makes it exciting and relevant.

In this fascinating foray into the centuries-old relationship between science and military power, acclaimed astrophysicist Neil deGrasse Tyson and writer-researcher Avis Lang examine how the methods and tools of astrophysics have been enlisted in the service of war. "The overlap is strong, and the knowledge flows in both directions," say the authors, because astrophysicists and military planners care about many of the same things: multi-spectral detection, ranging, tracking, imaging, high ground, nuclear fusion, and access to space. Tyson and Lang call it a "curiously complicit" alliance.

Humans from the earliest civilizations were spellbound by the night sky - craning their necks each night, they used the stars to orient themselves in the large, strange world around them. Stargazing is a pursuit that continues to fascinate us: from Copernicus to Carl Sagan, astronomers throughout history have spent their lives trying to answer the biggest questions in the universe. Now, award-winning astronomer Emily Levesque shares the stories of modern-day stargazers.

Uranium is a common element in the earth's crust and the only naturally occurring mineral with the power to end all life on the planet. After World War II, it reshaped the global order---whoever could master uranium could master the world. Marie Curie gave us hope that uranium would be a miracle panacea, but the Manhattan Project gave us reason to believe that civilization would end with apocalypse.

Erich von Däniken's Chariots of the Gods is a work of monumental importance---the first book to introduce the shocking theory that ancient Earth was visited by aliens. This world-famous best seller has withstood the test of time, inspiring countless books and films, including the author's own popular sequel, The Eye of the Sphinx.

It began with plutonium, the first element ever manufactured in quantity by humans. Fearing that the Germans would be the first to weaponize the atom, the United States marshaled brilliant minds and seemingly inexhaustible bodies to find a way to create a nuclear chain reaction of inconceivable explosive power. In a matter of months, the Hanford nuclear facility was built to produce and weaponize the enigmatic and deadly new material that would fuel atomic bombs.

In the Shadow of the Moon tells the story of the most exciting and challenging years in spaceflight, with two superpowers engaged in a titanic struggle to land one of their own people on the moon. Drawing on interviews with astronauts, cosmonauts, their families, technicians, and scientists, as well as rarely seen Soviet and American government documents, the authors craft a remarkable story of the golden age of spaceflight as both an intimate human experience and a rollicking global adventure.

In 1958, the US Air Force nuked the moon as a show of military force. In 1967, the CIA sent live cats to spy on the Soviet government. In 1942, the British built a torpedo-proof aircraft carrier out of an iceberg. Of course, none of these things ever actually happened. But in Nuking the Moon, intelligence historian Vince Houghton proves that abandoned plans can be just as illuminating - and every bit as entertaining - as the ones that made it.

The Story of the Earth in 25 Rocks tells the fascinating stories behind the discoveries that shook the foundations of geology. In 25 chapters, Donald R. Prothero recounts the scientific detective work that shaped our understanding of geology, from the unearthing of exemplary specimens to tectonic shifts in how we view the inner workings of our planet.

Icy, rocky, sometimes dusty, always mysterious – comets and asteroids are among the Solar System's very oldest inhabitants, formed within a swirling cloud of gas and dust in the area of space that eventually hosted the Sun and its planets. Locked within each of these extra-terrestrial objects is the 4.6-billion-year wisdom of Solar System events, and by studying them at close quarters using spacecraft we can coerce them into revealing their closely-guarded secrets. This offers us the chance to answer some fundamental questions about our planet and its inhabitants.