Scientists found all five nucleobases, the building blocks of DNA and RNA, in Asteroid Ryugu samples returned by Japan's Hayabusa2 mission. In a discovery with profound implications for the origin of life, scientists have found all the "letters of life" in an asteroid sample. An analysis of two tiny samples from Asteroid Ryugu, a 900-metre carbon- and water-rich asteroid discovered in 19... [2115 chars]
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