Earth Space Science

A signal has been picked up from Earth. The planet was supposed to be uninhabitable. But it seems there are survivors down there - with supplies, shelter, and running water. Perhaps there could be a future for humanity on Earth after all. Riley Hale will find out soon enough. She's stuck on a spaceship with the group of terrorists that is planning to brave the planet's atmosphere and crash-land on the surface. But when the reentry goes wrong, Riley ends up hundreds of miles from her companions, Prakesh and Carver.

War is almost upon the Alliance of four races. The window to prepare themselves for the invasion of the terrifying Morohta armies grows narrower each day. Colonel Mitch Taylor remains in recovery from the horrendous wounds he suffered at the hands of a Morohta prince. Lieutenant Jones leads sweeps throughout Alliance territory, watching and waiting. All fear the arrival of Queen Bolormaa and her sadistic sons, together with the vast armies they command.

This series follows Marine Corps Sergeant William Tell Davis as he tries to protect Earth by creating a fighting force made up human expatriates, an alien supercomputer, and a Roswell alien.

In the shadow of the cosmos, an unstoppable alien fleet advances, leaving a trail of conquered worlds in its wake. The Xortaag armada, an epitome of galactic might, now sets its sights on Earth. Yet hope flickers in the most unlikely of heroes: a maverick starfighter pilot with a penchant for movie quotes, a daredevil stuntwoman, a lethal super-assassin, and a cosmic spymaster. Their mission: to shield not just humanity, but billions of other intelligent lifeforms spanning the multiverse.

Earth is soon consumed by the invading alien armies as they land in their millions, and Mitch Taylor is the enemies' first target, knowing the danger he presents. Can Taylor escape his captors and rally those on Earth to fight back before it is too late, or will he fall alongside the rest of Earth’s defenders in a desperate last stand?

Bolormaa's vast and powerful armies have overrun Earth and cut a bloody swathe across every continent. All hope is lost. Most of Mitch Taylor's comrades are dead or captured, and all he has left is the determination to keep on killing - to slaughter as many of his enemies as possible before the overwhelming hordes engulf him. To his astonishment, he discovers he may not be alone.

A starship crashes in the land of giants and pits a space-faring race of humanoids against a barbarian race of warrior giants. The Fomorian giants watch in awe as a celestial object streaks across the sky on the eve of Samhain, the bloodiest pagan festival of the year. Druids proclaim that it's the prophesied Destroyer, and that the end of the world is near. One giant has his eye on the blonde-haired Brigit, whose fiancé awaits her in a nearby star system, and the giants attempt to barter for her.

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.

We’re finally ready to take the war back to the Hedalt. But they’re coming for us first, and in force. Yet the Hedalt Armada, led by High Provost Kagan, is far from our only problem. I am Captain Taylor Ray. On the eve of war, a new commander threatens to derail everything that Commander Sarah Sonner and I have fought for. While Sonner becomes locked in an internal power struggle, my unique crew and I must go rogue and take out the source of the Hedalt’s supremacy - the mysterious Nexus.

After 15 years, the intelligent computer Julius returns. Earth’s survivors have learned to live with their celestial neighbors. Julius has worked to gain enough resources to end all threats to his existence: Joan and Tom Herl, SiMPOC, and the remaining humans.

Anders, Dalia, and their small team have just escaped with their lives, barely. When they go searching for answers, they find that the enemy they thought they knew isn’t the enemy they need to fear. Can they uncover the secrets they need to save the galaxy and will an unexpected ally be the only thing standing between them and oblivion? The Secrets of Ilythia Omnibus contains books four, five, and six in the Memories of Earth space opera.

Car-En, a ringstation anthropologist on her first Earth field assignment, observes a Viking-like village in the Harz mountains. As Car-En secretly observes the Happdal villagers, she begins to see them as more than research subjects (especially Esper, a handsome bowhunter). When Esper’s sister is taken by an otherwordly sword-wielding white-haired man, she can no longer stand by as a passive witness. Knowing the decision might end her career, she cuts off communication with her advisor and pursues the abductor into the mountains.

The Olodumare Hegemony rules the entire solar system. Led by Oba Isembi, the primary agents of his rule are the Ori-Inu: highly trained telepathic operatives, who do the Oba's dirty work. They are found and trained by Orisha.

When Ori-Inu start disappearing, Isembi sends his finest Orisha, Hembadoon, to investigate. But when he is injured in a refinery explosion, it's up to Folami-Isembi's best, most powerful Ori-Inu-to learn the truth about the missing operatives.

Em outubro de 2017, cientistas de um dos maiores observatórios espaciais do mundo — localizado no topo de um vulcão dormente no Havaí — detectaram um objeto transitando por nosso sistema solar. A primeira hipótese foi a de que se tratava de um mero asteroide, como tantos outros que cruzaram e seguem cruzando nossa galáxia. Mas os dados coletados pelo telescópio Pan-STARRS1 revelaram detalhes curiosos, e bem anômalos, no comportamento desse visitante.

We have long fantasized about finding life on planets other than our own. Yet even as we become aware of the vast expanses beyond our solar system, it remains clear that Earth is exceptional. The question is: Why? In Lucky Planet, astrobiologist David Waltham argues that Earth’s climate stability is what makes it uniquely able to support life, and it is nothing short of luck that made such conditions possible. The four-billion-year stretch of good weather that our planet has experienced is statistically so unlikely that chances are slim that we will ever encounter intelligent extraterrestrial others.

The Xortaag fleet outnumbers the humans’ five to one, and using their mind-control machine, they can use all the Earth’s military forces against their own kind. The Xortaag colony ships are only a few weeks away, and when they arrive, they'll wipe out the human race to have space and resources for their people. And as if all this wasn’t bad enough, General Planetary Genocide Maada has just laid a trap for the Earth fleet and decimated a large chunk of their forces. To make things worse, an even more sinister threat (yeah, more sinister than the Xortaags) is emerging 1500 years in the future.

Nibiru, o décimo segundo planeta do nosso sistema solar, tem uma órbita extremamente elíptica e retrógrada, muito maior do que todas as outras. De fato, leva aproximadamente 3.600 anos para completar uma volta em torno do Sol. Seus habitantes, aproveitando essa aproximação cíclica, têm realizado visitas sistemáticas por centenas de milhares de anos, todas as vezes influenciando a cultura, o conhecimento, a tecnologia e até a própria evolução da raça humana. Nossos ancestrais referiam-se a eles de muitas formas, mas talvez a que melhor os represente seja ”deuses”.

An extraterrestrial colony, in some form, may already exist, just awaiting discovery. But the greatest impediment to such an important scientific discovery may not be technological, but political. No scientific endeavor can be launched without a budget, and matters of money are within the arena of politicians. Dr. Ben Bova explores some of the key players and the arguments waged in a debate of both scientific and cultural priorities.

The Godian Supreme, Theo, sets forth on the mission to create the planet Earth, but they soon find themselves in dangerous waters when a ruthless species makes itself known. Theo, unaware of what lies ahead, struggles to fulfill his promise to the Godians and to safeguard his creation.

Nuestra existencia está amenazada: las glaciaciones, los impactos de asteroides, la capacidad finita de la Tierra e incluso la lejana pero inevitable muerte del Sol son riesgos de tal magnitud que, si no abandonamos la Tierra, deberemos asumir la idea de nuestra extinción. Por eso, para Michio Kaku nuestro destino yace en las estrellas, no por la curiosidad o la pasión aventurera que los humanos llevamos dentro, sino por una simple cuestión de supervivencia.