Earth Space Science

Four centuries have passed since the end of the alien invasion that almost destroyed humanity. The surviving races, human and alien, now live in peace as allies. But when a terrifying new enemy cuts a path of destruction through the Alliance, there seems little hope of resistance. The situation is desperate, and desperate measures are required. With reluctance, they agree to resurrect a hero from the past, Colonel Mitch Taylor.

Videl Lai is dead and Tarizon's cataclysmic war is over, or so everyone thinks, until Tarizon's Intergalactic Fleet refuses to surrender. Then Videl Lai's adopted son, Evohn Cystrom masterminds the escape of Rupra Bruda, the father of the Purists movement. As the Fleet diviantly leaves it moon base on Clarion, Cystrom informs Chancelor Lorin Boskie that they plan to travel to Earth with the intent of its conquest.

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.

The Alliance of the Human, Krys, Aranui, and Cholan peoples lies in tatters after they turn on one another when a new threat emerges. The enemy is the Morohta, led by their fearsome queen, Bolormaa. A hard-fought battle buys the Alliance valuable time until the Morohta force the submission of the Cholan Empire. The Cholans then point their guns at the Alliance and demand their surrender.

Los lectores principiantes aprenderán sobre los patrones básicos del Sol y la Tierra y lo que causa día y noche.

Mars, the red planet, is ingrained in our culture, from David Bowie's extra-terrestrial spiders to Captain Scarlet to War of the Worlds. It has inspired hundreds of authors, scientists and science-fiction writers - but why? What is it about this particular planet that makes it so intriguing? Ancient mythologies defined Mars as a violent harbinger of war, star-gazers puzzled over its peculiar motion, and astrologers defined human personalities by its position and bizarre dance through the sky.

If a black hole is not a hole, then what is it? Find out what black holes are, what causes them, and how scientists first discovered them. Learn how astronomers find black holes, get to know our nearest black-hole neighbor, and take a journey that will literally s-t-r-e-t-c-h the mind.

Why is there winter in the Southern Hemisphere at the same time there is summer in the Northern Hemisphere? Here is an explanation of how the position of Earth in relation to the sun causes seasons and the wonders that come with each one of them. Summer. Autumn. Winter. Spring comes again. Year after year, the seasons repeat themselves.

Young listeners will learn about the basic patterns of the sun and earth and what causes day and night.

Naturwissenschaft leicht erzählt. Die Schwerkraft kann man mit einer Pfannkuchentorte erklären und die Relativitätstheorie mit dem Bauch einer dicken Katze. Klingt irre? Ist es auch! Vor allem, weil es funktioniert. Mit Begeisterung erzählt Johan Olsen vom Urknall über die Entstehung des Lebens bis zum Menschen. Er erklärt Atome, Relativitätstheorie, Moleküle und Proteine, also was man alles braucht um eine Welt zu erschaffen mittels humorvoller Veranschaulichungen - und warum der Mensch vielleicht doch nicht die Krone der Schöpfung ist.

New York’s Battery Park is under water. The beaches of the Jersey Shore are reduced to thin strips of sand. Huge portions of California have been reduced to burned hellscapes due to relentless fires and mudslides. Refugee camps dot the former state, as survivors struggle to figure out what to do now that their homes, cars, and all their worldly possessions have been lost. Storm shelters are mandated in major population areas to protect citizens from tornadoes, hurricanes, and other severe weather caused by global warming.

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.

2012 - Mankind steps onto the moon's surface for the second time. Three hundred years later, mankind has colonized several planets within our solar system. But the time of prosperity and growth is about to come to an end. Alien forces begin invading the solar system, leaving nothing in their wake. It is up to Earth's newly created fleet of war ships to defend the system.

The alien invaders were driven from Earth, but isolated pockets continue to hold out and hinder the recovery effort. Major Mitch Taylor's Inter-Allied Company is re-organized into a rapid response task force to seek out and destroy all remaining threats. However, when Ramstein is obliterated in an aerial attack, they know that the battle for Earth is not over. With enemy forces remaining in the solar system, the armies of Earth have no choice but to rally together and make an assault against the Moon to secure the safety of their planet. They must take the fight to the aliens.

In the mid-1990s, astronomers made history when they detected three planets orbiting stars in the Milky Way. The planets were nothing like Earth, however: They were giant gas balls like Jupiter or Saturn. More than 500 planets have been found since then, yet none of them could support life. Now, armed with more powerful technology, planet hunters are racing to find a true twin of Earth. Science writer Michael Lemonick has unique access to these exoplaneteers, as they call themselves, and Mirror Earth unveils their passionate quest.

After halting the enemy advance across Europe, the war continues to rage in Paris. International armies have converged on the French city to make a stand. When Taylor investigates a mysterious sighting in their northern perimeter, he sees that enemy forces are encircling the city. The humans are quickly running out of ways to flee from the death trap.

The war appeared lost before it had begun, and the despotic Queen Bolormaa, seemed unstoppable. Until an unlikely alien ally paved the way to victory. Zaya was the exiled son of the Mohrotan Queen. A powerful, and resourceful fighter who could yet provide the key to victory, but at what cost? Zaya cared for nothing and nobody. He had a single ambition, to destroy his mother.

Silence Leigh has finally wangled a deal with the Hegemony to use their gear to help them find the lost star roads to Earth. This comes at a price, though, as the credit for this will go to the leader of the Hegemony's family, so that one of his relatives can inherit his position, given that he has no children.

A being from a distant planet named Zara, with advanced technology and a deep understanding of universal harmony. Zara arrives on Earth in a spectacular way, sparking global curiosity and fear. Governments scramble to understand the visitor's intentions.

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.