Unlike other theories about extraterrestrial life in our solar system, this latest one from a Dr. Brett Gladman revolves around Earth being the source of that life. What Dr. Gladman and his colleaugues claim is that aside from wiping out the dinosaurs, the asteroid that struck the Yucatan Peninsula 65 million years ago also sent flying through space millions of planet fragments that might have contained microbes. Titan is the focus of the investigation as, according to the report, the mass of the moon would not have accelerated the incoming particles to a deadly speed.