Everything Needed to Make RNA and DNA Has Been Found in Asteroids and Meteorites

Space rocks that fell to Earth within the last century contain the five bases that store information in DNA and RNA, scientists report in Nature. These “nucleobases”—adenine, guanine, cytosine, thymine, and uracil—combine with sugars and phosphates to make up the genetic code of all life on Earth. Together, cytosine, thymine, adenine, guanine, and uracil, a […]

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