Earth Space Science

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.

The unabridged and enhanced 2nd edition of Zetetic Astronomy, formulated in the 19th century by Samuel Rowbotham, presents a flat-earth cosmology grounded in direct sensory observation rather than theoretical abstraction. Rejecting Newtonian and Copernican astronomy, Rowbotham argued that the Earth is a flat, stationary plane with the Sun, Moon, and stars moving in circular paths above it, asserting that empirical evidence—such as the apparent flatness of horizons and the behavior of water surfaces—supports this model.

For anyone who has ever looked up at the stars and wondered what it all means, Isaac Asimov's Guide to Earth and Space is indispensable. In this audio, 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?

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.

Earth is rising in the House of Voltar.... And there’ll be hell to pay! That’s right. The invasion is on...and it’s coming soon to a galaxy near you. The action couldn’t be hotter, and the plot couldn’t be more diabolical. Earth is coming to Voltar - and the Voltarians won’t know what hit them. Murder, blackmail, drugs, psychoanalysis, PR firms, sex-crazed teenyboppers, riots in the streets, women in chains. These are the powerful secret weapons of war.

Dalton Thorne never asked to be the chosen one. He was just a cargo hauler trying to make a living. Now he's stuck saving humanity whether he likes it or not. Little Earth is finally free from the Consortium's iron grip, but the celebration is short-lived. A mysterious and powerful faction called the Chi Hunters has swept in to fill the void, and they've got grand designs for the galaxy—with Dalton as their unwilling pawn. When a long-hidden fragment of Earth is discovered, Dalton and the crew of the Iron Horse are dispatched on a mission to unite it with Little Earth.

Commander Finch believes he has finally, and safely, returned his crew home. But a jump through the Androski wormhole takes the Omni and her crew to 1993. Fifty years before their original mission. Now Finch and the crew must navigate a past that is still behind in technology until they can safely jump again. They must do so without interfering with the past...and without getting caught. Time is running out and the Androski will soon close. They face not only a leap of time, but faith in where they end up.

Hackett, in his trusty ship the Perseus, is not just a space traveller—beginning his travels with an expedition to Neptune and back—but, thanks to the time-dilation effect, a time traveller as well. His new mission will take him to Andromeda, to get a close-up look at the constellation which will eventually crash into the Milky Way, and give humanity a heads-up about the challenges which are coming. A mission which will take him five million years to complete. Not only is Hackett exploring unknown space, but he will return to a vastly different time.

Opportunities there are few and far between...that is, unless you're willing to put on a uniform. For ace-pilot Deborah Allen Riker (aka “Admiral Dare”), life had never been easy. She's defended Earth against countless enemies, both alien and human alike. Now she's retired. Committed to a life of solitude and studying the aliens she spent a lifetime fighting...until she finds herself dragged into a new conflict. A conflict she never saw coming.

Technical Specialist Simon Brooks was no soldier. More suited for the academy than combat, his assignment to a rear echelon support squadron seemed a good fit. Everything changed when the Sleer attacked Earth’s newly salvaged spacecraft, UEF Ascension. In a flash, Brooks goes from fleeing a burning transport plane to piloting a broken mech and learning the habits of a fighter pilot from Lt. Sara Rosenski, the terror of Nightmare Squadron. But his rising star takes a hit when he learns to talk to the Sleer AI, Genukh...and suddenly the UEF doesn’t know whose side he’s on.

Seven billion years from now, long after the Sun has died and human life itself has become extinct, alien beings reincarnate humanity from our fossilized DNA drifting as debris in the void of deep space. We are reborn to serve as bait in a battle to the death between the Rimstalker, humankind's reanimator, and the zotl, horrific creatures who feed vampire-like on the suffering of intelligent lifeforms.

Alien fighters bombard Earth's ruins. Cannibalistic aerobics instructors hunt the wastes. The last free survivors struggle against starvation and enslavement. It's become a world where friendship costs too dearly and heroics verge on suicide. One young man can't resist either until a fed-up AI steals him off the planet. Alone with only a sarcastic, broken-down starship, he braves a whole new verse full of strange new enemies and tech he barely understands.

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.

Earth burns. After generations in exile, we returned to our long-lost planet. Scarred. Haunted. Survivors. We - the last humans - are finally home. But our enemies still crave our blood. Seven alien species unite. Seven fleets bombard our planet. Seven armies invade our beautiful world. They have one goal: To kill us all. We refuse to lose Earth again. We will resist. We will fight for every hill, every valley, every stone, and blade of grass. We will defend our planet. At any cost. Together, we will raise our voices. We will sing the song of Earth. We will tell the enemy: Earth is ours!

Just days before Jake Saunders plans on proposing to the love of his life, Jake is called upon once again to save his home, Earth. The Earthen Legion troops and its allies think they’re battling only pirates, but a new, more powerful foe from another galaxy flanks their forces and invades, in search of a weapon the planet didn’t even know it had.

During a classified mission to the ISS, astronaut Jack Kildare picks up an eerie signal. An alien spaceship is orbiting distant, icy Europa. It looks derelict...but is it? As fear sweeps across Earth, NASA spearheads a frenzied effort to build a ship capable of traveling to Jupiter to confront the alien menace. Technology intertwines with espionage and sabotage in a race against the clock. Fighting for his rightful place in the mission, Jack finds himself submerged in a world of secrets, international power games, and cold-blooded murder.

Living in the Fellowship meant fighting one space battle after another. Every civilization was aggressive, hostile, and impossible to live with in peace. A Welken task force stumbles upon a massive Myot ship building complex and every Welken warship is destroyed in the ensuing battle before they can warn the home world of the Myot's location. One escape pod manages to escape the battle and the Myot know it must be prevented from making it back to Welken territory.

After three years of exile from humanity's war against the Kurians, David Valentine returns to battle. The Lifeweavers, Earth's allies in the conflict, have mostly vanished, but those that remain are held captive by an overlord known as the Seattle Kurian. To free them, Valentine must convince the legendary resistance fighter known as Adler to join his cause. But the "Old Man" is something of an overlord himself....

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.

Darius has enjoyed a nice break from an action packed integration into the GGA. With Earth in limbo, and a lost colony likely in need of help, he knows his vacation is on borrowed time. He owes the Merchant Marines, Pavia, and humanity itself to do more, to be more. So when life is turned upside down again, he ventures back into the stars, helping those he can, when he can. The adventure is intense, his family bonds are tight, and the dangers ever-present.