NASA says we might all be aliens

By Mike Wehner, Tecca | Today in Tech – Thu, Aug 11, 2011

Whether or not you believe in life outside of our solar system, thefact that we are all here means that the stuff we're made of must havecome from somewhere.

After studying meteorites and discoveringready-made components of DNA present, NASA has concluded that thebuilding blocks of life as we know it may have crashed down on Earthfrom above.

Researchers at the Goddard Space Flight Center discovered portions of DNA on chunks of crashed spacerock in both Antarctica and Australia.

The extraterrestrial visitorscontained various types of nucleobases, which are thought to beessential in the creation of DNA, and life in general.

The scientistswere able to isolate the compounds and prove that they weren't createdhere on Earth. This was particularly important, as critics often citecontamination as the reason for these compounds appearing on meteoritesthat have been studied in the past.

The team also concluded that certain space rocks — depending ontheir makeup and speed — work like manufacturing facilities for thesebiological precursors.

The implications of the discovery arefar-reaching, and suggest that humanity may owe its existence to awell-placed meteorite in the early days of the Earth, and that withoutit the planet might be a rocky, watery wasteland.