So, this is kinda wild: scientists at NASA have uncovered new evidence that DNA components found in meteorites can originate in space, lending new credence to the theory that life on Earth may have arisen from a pre-existing "kit" of materials delivered via asteroid. The discovery is outlined in a new paper from Dr. Michael Callahan, whose team of researchers closely analyzed samples from 12 different meteorites, using a mass spectrometer and liquid chromatagraph. In their samples, they found traces of adenine, guanine, and a variety of molecules known as nucleobase analogs -- including three that are rarely found on Earth. Scientists have long known that meteorit
