Earth Space Science

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.

Ambassadors from Earth relates the story of the first unmanned space probes and planetary explorers - from the Sputnik and Explorer satellites launched in the late 1950's to the thrilling interstellar Voyager missions of the '70's - that yielded some of the most celebrated successes and spectacular failures of the space age. Jay Gallentine delivers a quirky and unforgettable look at the lives and legacy of the Americans and Soviets who conceived, built, and guided those unmanned missions to the planets and beyond.

They destroyed the civilization of the ancient alien Elders thousands of years ago, and now they’re following Andy Clanton and the crew of the James Bowie back from the edge of the galaxy and into Alliance space, bent on wiping out all intelligent life in the galaxy. The Bugs probe for weakness, attacking new friends and old enemies, and forcing Andy and the others into union with forces that had tried to destroy them only months before and putting a wedge between the Earth and the Alliance.

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.

Where is the best place to find life beyond Earth? We often look to Mars as the most promising site in our solar system, but recent scientific missions have revealed that some of the most habitable real estate may actually lie farther away. Beneath the frozen crusts of several of the small, ice-covered moons of Jupiter and Saturn lurk vast oceans that may have been in existence for as long as Earth, and together may contain more than 50 times its total volume of liquid water. Could there be organisms living in their depths?

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.

A generation after the events of The Long Earth, mankind has spread across the new worlds opened up by Stepping. Where Joshua and Lobsang once pioneered, now fleets of airships link the stepwise Americas with trade and culture. Mankind is shaping the Long Earth - but in turn the Long Earth is shaping mankind...

The Expanse meets The Godfather in Empire Earth (The Complete Trilogy): A Space Opera Boxed Set. Three full Books. 1,000 pages of space opera filled with intrigue, betrayal, and high-octane action that will keep you turning pages long into the night.

On board an X101 stealth aircraft, Lauren, Jack, and Mike arrive at the secret location of Sky Dreamer Corp - a place equipped with technology and resources far more advanced than anything they could have ever imagined.

The basilisks. Giant serpents from deep space. Their true name is unknown. Their homeworld is cloaked in shadow. But one thing is certain: They're killers. And they vow to kill us all.

The Earth has changed. War is now fought in an alien virtual reality - the Game - where many of the players are anything but human. Now part of the Black Rose guild, Alan heads to the Academy to level up and get stronger. He hopes to make allies and learn skills to win the battles to come. But with everyone pursuing their own agendas, what can one gamer do in a universe he still doesn't fully understand?

After a long and exalted military career, General Connor Gates thought he was finally ready to retire. He was wrong. When interstellar probes sent to Earth’s star system report back 40 years earlier than expected, the colonists learn that humans somehow survived the cataclysmic events of the past…but so did the enemy.

On the fringes of human space, a murder will light a fuse and send two rebels on a planetary scale collision course. This audiobook box set contains the first three books of the Opus X sci-fi series from Michael Anderle: Obsidian Detective, Shattered Truth, and Investigating Deceit. Jia lives on Earth, where peace is a given. Erik is on society’s frontier, where authority depends on how much firepower you wield. She is from the powerful, the elite. He is with the military. Both want the truth—but is revealing it good for humanity?

It’s been eight years since an alien invasion drove a small surviving group of settlers to seek refuge in an underground shelter. Cut off from the rest of humanity, the ragtag band has maintained a narrowly functioning colony due to communal effort and salvage runs. Alex Archer has her own duties as a dog handler. While this off-world colony may be harsh, Ash, Alex’s black shepherd raised to sense threats, makes living in it a little nicer.

In researching one of history's greatest scientific quests, a mission to measure the Earth and define the meter, Ken Alder stumbled on a 200-year-old secret: The meter, it turns out, is in error. This is a story of two men, a secret, and a timeless human dilemma: is it permissible to perpetuate a small lie in the service of a larger truth?

They’re here. They’ve arrived. And they’re all eyes. The Voltarian scouting party - illegal aliens extraordinaire - on a top-secret expedition led by one Jettero Heller, Royal Officer of the Fleet. His mission: rescue the planet from pollution - and make it safe for the upcoming invasion. His problem: The planet may not want to be saved - and the invasion may just be a trick.

In 1977, two extraordinary spacecraft called Voyager were launched to the stars. Affixed to each Voyager craft was a gold-coated copped phonograph record as a message to possible extra-terrestrial civilizations that might encounter the spacecraft in some distant space and time.

When Darius’ newly founded colony on Umbria Prime is attacked, he fights off the raiders and finds clues that humanity’s old foes–the Iglax–are to blame. Once again, he’s got to return to the galaxy at large to upgrade his ships, advance his skills, and spread humanity further among the stars.

In 1959, the Soviet probe Luna 3 took the first photos of the far side of the Moon. Even in their poor resolution, the images stunned scientists: The far side is an enormous mountainous expanse, not the vast lava plains seen from Earth. Subsequent missions have confirmed this in much greater detail. How could this be, and what might it tell us about our own place in the universe? As it turns out, quite a lot. When the Earth Had Two Moons is an astonishing exploration of planet formation and the origins of life by one of the world’s most innovative planetary geologists.

Jake Adlar's goals in life were simple—possibly nonexistent. All he wanted was to fly a desk. Hence, he'd joined the Space Force, the service with the most extensive array of Earth-side clerical specialties. All he needed to make him happy was an office, a computer, his favorite coffee mug, and a never-ending pile of requisitions.