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Man may have been born in outer space.

Summary: Scientists have found traces of a key building block of biology in dust snatched from the tail of a comet. Scientists at Goddard Space Flight Centre in Greenbelt, Maryland, have uncovered glycine, the simplest amino acid and a vital compound necessary for life, in a sample from the comet Wild 2, named for astronomer Paul Wild. The sample was captured by National Aeronautics and Space Administration's Stardust spacecraft. They spent two years to verify the results. From this, we can know that comets could have delivered amino acids to the early Earth, contributing to the ingredients that life originated from. They deployed a tennis racket-shaped collector packed with a substance called aerogel, which harvested comet particles. Professor Don Brownlee, a University of Washington astronomer who served as chief scientist on the Stardust mission, said the result is exciting because it represents a second, very large source of life-giving material. He estimated that there are as many as a trillion comets in and around the solar system, many of them located in the chilly Kuiper Belt beyond Pluto, or in the Oort Cloud even farther out.Prof Brownlee pointed out that many of the 30,000 or so meteorites found on Earth bear traces of organic compounds, and there is also evidence that they were once warm and wet, all necessary conditions for life. Yet none of the meteorites has shown any evidence of life forms.

Comments: I felt that it is very interesting as it might be able to find out how living things were first made and this discovery is a huge affair.