Earth Space Science

In the final book of his astonishing career, Carl Sagan brilliantly examines the burning questions of our lives, our world, and the universe around us. These luminous, entertaining essays travel both the vastness of the cosmos and the intimacy of the human mind, posing such fascinating questions as how did the universe originate and how will it end, and how can we meld science and compassion to meet the challenges of the coming century?

Earth is the only planet known to support life. It has plenty of water, it's the right temperature, and it has a blanket of gases to protect it. Explore your own home planet in this book about Earth.

There is a milestone in the evolution of every sentient race, a Tech Singularity Event, when the species achieves transcendence through its technological advances. Now the creatures known as humans are near this momentous turning point. But an armed threat is approaching from deepest space, determined to prevent humankind from crossing over that boundary - by total annihilation if necessary.

Two hundred years ago, a fleet of colony ships left Earth and started a settlement on Proxima Centauri. Centurion Space Force pilot Nathan Stacker didn't expect to return home to find his wife dead. He didn't expect the murderer to look just like him, and he definitely didn't expect to be the one to take the blame. But his wife had control of a powerful secret. A secret that stretches across the light years between two worlds and could lead to the end of both. Now that secret is in Nathan's hands, and he's about to make the most desperate evasive maneuver of his life.

Exploring more than 80 of the world's most scientific theories and big ideas across the fields of physics, chemistry, biology, astronomy, geology, and math, this audiobook offers a fascinating look at the history of science. All the big scientific ideas are brought to life with pithy quotes and step-by-step "mind maps" - from evolution and continental drift to black holes and genetic engineering, showing how the ideas of famous scientists have affected our understanding of the world.

In late 2017, scientists at a Hawaiian observatory glimpsed an object soaring through our inner solar system, moving so quickly that it could only have come from another star. Avi Loeb, Harvard’s top astronomer, showed it was not an asteroid; it was moving too fast along a strange orbit, and left no trail of gas or debris in its wake. There was only one conceivable explanation: the object was a piece of advanced technology created by a distant alien civilization.

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.

Only an ember of humanity survived the first Xaros invasion. Now the Xaros return to deliver the final blow to Earth and her defenders. A moon carrying an armada of Xaros drones unleashes its deadly cargo on the solar system. Fortress Mars stands between the enemy and an ill-defended Earth. While the battle rages over the red planet, the Breitenfeld must launch a desperate mission to Pluto to cut off enemy reinforcements. Earth stands on the brink of ruin, and humanity needs every hero it can find to turn back the tide of destruction.

In this one-of-a-kind memoir, Jack Clemons - a former lead engineer in support of NASA - takes listeners behind the scenes and into the inner workings of the Apollo and Space Shuttle programs during their most exciting years. Discover the people, the events, and the risks involved in one of the most important parts of space missions: bringing the astronauts back home to Earth. Clemons joined Project Apollo in 1968, a young engineer inspired by science fiction and electrified by John F. Kennedy's challenge to the nation to put a man on the moon.

It wasn’t supposed to be this way. Three days. That’s what they promised. But on Earth, the danger is unrelenting, and promises are hard to keep. Now Sheriff Duke is the one on the run, chased by an unexpected enemy eager to finish what they started. An enemy with an agenda that begins with killing him but ends with something worse. Much, much worse. Once the secret is out, the universe will never be the same.

Some see dust as dull stuff, useless at best, and sneeze-inducing at worst. But in the hands of writer Hannah Holmes, dust becomes a dazzling and mysterious force. As Holmes says, dust is a messenger, and air is its medium. And by the end of this fascinating journey through The Secret Life of Dust, we cannot help but agree.

The battle lines are collapsing, and the Legion of Wolves cannot hold back the tide. Luna and Earth are both falling to the enemy, and there is little hope as the defense is pushed back on all sides. But when Wolf learns about a race in a distant part of the galaxy that has successfully fought the vanhat to a standstill, he decides to launch an expedition to seek their help. The AI Collective has also learned about the expedition, though, and intends to kill humanity before they can find aid.

For Sheriff Duke, the danger has reached the final countdown. Captured, tortured, beaten, but undefeated, it’s 60 seconds to midnight, and the only way to save his wife and daughter is through the fugitive he left home to hunt. But the real enemy isn’t what they seem, and the history of the forgotten Earth is about to be rewritten. Will any of it matter if there’s no one left to read it?

It finally happened. Commander Thrax Ti Ix created a hyper-spatial tube for the Swarm Imperium. Across thousands of light-years, a vast armada of warships is heading for Earth to burn the homeworld down to its bedrock as the Swarm begins its genocidal campaign against the human race. No one - not the New Men, the Spacers, the Wahhabi Caliphate, or Star Watch - has faced such staggering odds. Alone or united, it makes no difference.

For anyone who has ever looked up at the stars and wondered what it all means, Issac Asimov’s Guide to Earth and Space is indispensible. Issac Asimov’s gift for popular and entertaining exposition has never been better deployed, with his succinct answers to the most intriguing questions about planets stars and galaxies. What are quasars? How was the Earth formed? Puzzled by pulsars? Perplexed by the Big Bang? Bewildered by black holes?

Life for the robots of the Axiom will never be the same once they meet the Earth robot Wall-E. Listen along as Wall-E and his new robot-friend, Eve, help prove life is sustainable on Earth and return the humans to their home planet.

The only planet to support life, Earth has a lot going for it. Think you know everything there is to know about our home planet? Think again. Discover more about the blue planet we call home.

A corporate aristocracy descended from Africa rules a colony on a distant planet. Life here is easy—for the rarified and privileged few. The aristocrats enjoy a powerful cybernetic technology that extends their life spans and ensures their prosperity. Those who serve them suffer under a heavy hand. But within this ruthless society are agents of hope and change. In a secret underwater laboratory, a separatist cult has created a threat to the aristocracy. The Primes are highly intelligent, manipulative products of genetic engineering, designed to lead a rebellion.

They came from deep space. They came to destroy us. Fifty years ago bloodthirsty aliens devastated the Earth. Most of humanity perished. We fell into darkness. But now we rise from the ashes. Now we fight back. Marco Emery was born into the war. After his mother is killed, he joins the Human Defense Force, Earth's ragtag army. Emery must survive basic training, become a soldier, and finally face the aliens in battle. Against the alien onslaught, Earth stands alone. But we will fight. We will rise. We will win.

Satellites may exist out in space, but they let us study Earth from the outside looking in. From climate change to natural disasters and more, find out how scientists are using satellites to tackle some of our world's most challenging problems.