Did you ever hear the tragedy of the Martians who invaded Earth? I thought not. It's not a story the humans would tell you. It's an old legend of theirs. The Martians were rulers of the planet Mars in the Sol system, the same system as Earth, so powerful and so wise they were able to build spaceships capable of crossing the void between the planets and walking on the surface... They had such a knowledge of science that they could do this before the humans even invented flight! The Martian evolution was so advanced in time that they could even keep their species alive against all attacks. Their ships were considered by many humans to be unnatural, more like monsters of the deep than spacecraft. They became so powerful... the only thing they were afraid of was losing their supremacy to the rapidly advancing humans, which eventually, of course, they did. Unfortunately they did not check Earth well enough to find it a death world well beyond Mars, and so soon after they landed to try and take it for their own, the microscopic life humans took for granted killed them in their sleep. Ironic. They could travel the void, save their race from all they had done to their world, but they could not save themselves from Earth.