Tellus

Tellus
Tellus is the third official planet from the star Sol and homeworld of Humans and a great many other animals, as well as plants, though by the year 2100 A.D., its ecosystem was damaged to the point that only 35% of the original flaura and fauna remained, with Humans having destroyed the other 65% at an increasingly quicker pace over the previous three centuries.

History (From 2111 A.D., onwards)

Roughly a decade after 2111 A.D., Tellus had been divided up into two factions, Liánméng and the Hakkō ichiu, both sides locked in a cold war, the only peace to be found off-world, on the neutral colonies, protected by unbreakable treaties. To simplify matters, the independent AIs created an insane, yet predictable, militaristic program that established itslef in orbit around Jupiter and launched multiple attacks on Human-inhabitated parts of the solar system to unite the planet. After thirteen years of largely robotic war, the newly-formed I.P.D.G. finally, under the leadership the The Chancellery, eradicated the program and its forces, helped greatly by the xenophobia-inspiring enemy's creators. Soon after, the AI created Warp-travel and decided that it would, ultimately, be more profitable to let the Humans in on it, to be used as unwitting facilitators in their expansion. By the year 2486 A.D., it was largely depopulated of Humans after the mass off-world migrations of 2199 A.D. and was undergoing a re-fertilization effort that had begun at least fifty years prior. In 2494 A.D., it was a spectator to a major naval battle involving the Sol Home Defense Fleet and several alien ships belonging to the Expansionist Empire somewhere between it and Mars. It managed to intervene by compensating for the slight delay of the speed of light and the momentum of the alien ships along with Mars' Orbital Defense Network, and destroyed the attackers with a storm of lasers, shredding apart the ships.

Defenses
 * At least five Plutonium-powered Orbital Defense Lasers, presumably automated or remotely controlled.
 * Several hundred one-kiloton-rocket-firing drones, useful only for short range (100,000 kilometers).
 * 12 orbiting Rail Guns, often firing super-compressed waste from the surface.
 * At least ten Plutonium-powered Microwave and Gamma cannons with an even shorter range than the drones.
 * At least ten surface-to-vacuum 300-kiloton rocket on the surface.

(For more infromation, visit Wikipedia's page on Earth)