If you really think there is no life somewhere besides here on earth... .... nm
Well according to Tom Cruise, 75 million years ago Galactic Emporor Xenu sent out tax audit demands to billions of people scattered among 76 planets. As each one entered the audit centers for the income tax inspections, the people were seized, held down and injected with a mixture of alcohol and glycol, and frozen. Then, all 1.4 trillion of these frozen people were put into spaceships that looked exactly like DC8 airplanes, except that the spaceships had rocket engines instead of turbines.
Xenu's entire fleet of DC8-like spaceships then flew to planet Earth, where the frozen people were dumped in and around volcanoes in the Canary Islands and the Hawaiian Islands. When Xenu's Air Force had finished dumping the bodies into the volcanoes, hydrogen bombs were dropped into the volcanoes and the frozen space aliens were destroyed.