Earth Space Science

The marauders, vicious alien predators, brought us to our knees. They destroyed our fleets. They burned our cities. They butchered millions. But now we fight back. Across the ruins of Earth, we rise in rebellion. In the depths of space, we seek allies. And our last warship prepares for one final battle. It's a time for heroes. A time to show our human pride. Because Earth is our home. Earth is our birthright. Earth is eternal. We will save it. Or we will die on our feet.

For years, they stalked us. Kidnapped us. Dissected us. For years, we feared them. Some call them "gray aliens". Some claim they crashed in Roswell. Others say they're just a myth. But legends often spring from terrifying truths. There are monsters in the dark. And their evil knows no bounds. We've faced aliens before. But nothing like this. This enemy is stronger, smarter, and crueler by far. And they want to kill us all. But we refuse to fall. We will muster all our courage. All our strength. We will tell the enemy: "Earth will rise!"

No one on Earth knows the seeds of the world’s destruction just fell from space. Tiana knows what duty means though. It's why all her friends are dead. Alone on a primitive world. All her all her technology at the bottom of the ocean. Outnumbered by deadly enemies only she can bring to justice. If she fails her mission now, another sentient species will fall. And the Tyrant Empire will rise again - because Earth has just been infected with a fatal parasite.

Turns out, not only is Ellie an alien, but an ancient and powerful relic housing the forbidden knowledge of a lost civilization is hidden deep within her genetic code. Suddenly, she's on the run from a malevolent Emperor who sees her as the key to ruling the galaxy.

The Confederation has decided that Earth represents a significant danger to their future plans of Empire. A massive fleet is dispatched to destroy the Solar System and every Human on its planets, moons, and asteroids. If the Solar System falls, the fledging Human Empire will have no chance of survival. Admiral Reynolds is tasked with defending the Solar System and preserving as many Human lives as possible. He knows he faces a nearly impossible task as he does not have the ships needed to stop the coming attack.

A new generation comes of age 18 years after humanity arrived on the colony planet Gaia. Now threats from both within and outside their Trident threaten everything they've built. The discovery of an alien installation inside Gaia's moon, terrorist attacks and the kidnap of a man's daughter stretch the community to breaking point, but only two men stand a chance of solving all three mysteries before the makeshift planetary government shuts everything down.

Explore the Earth's last frontier, learn how the dinosaurs died, or discover the direction human evolution is heading. The world's greatest scientists are at your disposal in Great Minds of Science. Let them take you to the very frontiers of science, with narratives full of genius, personal insight, and enlightenment. In this tribute to mankind's ingenuity and boundless curiosity, get detailed explanations about dinosaurs, viruses, evolution, oceanography, astronomy, and artificial intelligence.

Apollo 15 command module pilot Al Worden was one of the highest-profile personalities among the Apollo astronauts, renowned for his outspokenness and potent views but also recognized as a warm and well-liked person who devoted much of his life after retiring from NASA to sharing his spaceflight experiences.

They say that necessity is the mother of all inventions. Amir Weatherby has the world in his hands, quite literally. When his company discovers an asteroid on a direct collision course with Earth, they decide to keep the news quiet and find a way to survive the impending apocalypse themselves. Secret projects begin with the intent of preventing the world going the same way as the dinosaurs.

Ein Geheimnis, verborgen in der Antarktis. Ein Rätsel, das seit Jahrtausenden auf seine Lösung wartet. Und ein Master Gunnery Sergeant aus Brooklyn, der ausgesprochen sauer ist, weil er auf einen Haufen Wissenschaftler aufpassen soll.

È la sua ultima operazione prima del pensionamento e Patrick "Wic" Finnegan viene spedito sugli altipiani ghiacciati di Ellsworth. L'unica ragione per cui ha accettato? Deve un favore a un vecchio amico ma questo non vuol dire che lo faccia volentieri. Quando Wic finalmente vede ciò che la squadra di ricercatori ha scoperto, non può credere ai propri occhi: una tempesta furibonda si sta per scatenare sulla Terra.

The fifth installment of an epic science-fiction series that tells of humanity's desperate struggle to survive against an overwhelming alien invasion.

United we stand. Divided we fall. We stood together once. United. Proud. Humanity was one. Together we colonized the stars. Together we built an empire. That was a long time ago. Today humanity is fractured. Earth and Mars clash in war. Brother fights brother. Our fleets once faced the stars. Today they face each other in battle. Our empire frays. Hearts that once blazed with courage now burn with hatred. Meanwhile the true enemy draws ever nearer.

They say hard times create strong men, strong men create good times, good times create weak men, and weak men create hard times. Marco Emery was born into hard times. He was raised in war. He grew up in bomb shelters and on battlefields, fighting to survive. He became a soldier. A war hero. Then, after vanquishing his last enemy, he retired to raise a family. And Earth moved on.

Every minute, several huge “snowballs” break up as they approach the Earth and deposit a large cloud of water vapor in Earth’s upper atmosphere. That’s the startling finding that world-renowned physicist Louis A. Frank came to after studying the images from the Dynamics Explorer 1 spacecraft. His conclusion, based on data acquired at the limits of detection, created a storm of controversy among scientists. This is the story that was told in The Big Splash, published in 1990. But, the story does not end there.

Earth stands on the brink of doom, but hope lies in the Bertram Ramsay Space Station, evacuating seven million survivors. Jaxon Leith is struggling to recover from the explosion that rocked Compression, halting the evacuation and leaving two million legitimate occupants stranded on Earth. Together with the rest of the covert operations team, Jaxon continues the mission to neutralise the station's biggest threat: The Acolytes of Gaia.

Ancient people from many different cultures - Greek, Roman, Mezo-American, Arab - all looked up and imagined pictures in the sky by "drawing" a line from one star to another, like a connect-the-dots puzzle. These star pictures - constellations - represented myths and legends from the various cultures that still fascinate us today.

The Earth had four fleets to fight the invading enemy. The first fleet valiantly protected earth, but it wasn’t enough. Three fleets would arrive soon and end the threat...but they never came through the wormhole. One ship escaped the massacre, fleeing deep into space while the rest of Earth’s defenses were destroyed. Only the barrier around the planet keeps the enemy from finishing what they started.

Un secreto enterrado en la Antártida por miles de años. Y un sargento muy cabreado por tener que hacer de niñera para los investigadores que tienen que resolver el misterio. La última misión de Patrick Finnegan, alias Bic, antes de jubilarse de los marines, lo lleva hasta las montañas subglaciales Ellsworth. Pero ¿el motivo de verdad por el que está ahí? Le debe un favor a un viejo amigo. Aunque eso no significa que lo hará con gusto. Cuando Bic ve lo que han descubierto, no puede creerlo. Tampoco está listo para el estallido de violencia que se va a desencadenar.

Agartha is like an enchanted place hidden in the core of the world; even though it is an open door, it can't be entered without the permission of those who live there. Admiral Byrd mentioned in his diary that he came across a highly advanced city way beneath the surface. Who was Admiral Byrd? And could a hollow planet really exist?