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NASA's OSIRIS-REx mission has unveiled significant findings from a 4.3-ounce sample retrieved from the asteroid Bennu. According to studies published in the journals Nature and Nature Astronomy, the sample contains 14 of the 20 amino acids essential for life on Earth, five nucleobases responsible for genetic coding, and minerals formed from evaporated water. While these findings do not confirm extraterrestrial life, they suggest that conditions conducive to life may have previously existed in the solar system, raising questions about the origins of life on Earth.
Nicky Fox, associate administrator of NASA's Science Mission Directorate, stated, "Bennu’s samples are pivotal in our understanding of what ingredients in our solar system existed before life started on Earth." The discovery builds upon previous evidence of water and carbon on Bennu, highlighting the asteroid's role as a "time capsule" revealing details about the early solar system's environment. Further investigations aim to explore unresolved questions, including the composition of amino acids found on Bennu, which include both left and right-handed types, unlike those produced on Earth.