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Message: <blockquote data-quote="mag123" data-source="post: 29354740" data-attributes="member: 73975">Researchers just announced the discovery of the nucleobase uracil—one of the building blocks of RNA—in a sample from the asteroid Ryugu.This isn’t the first time a nucleobase has been discovered in a sample of a space object, but it’s the first time we’ve been able to rule out contamination from Earth as an explanation for its presence.Scientists look forward to comparing these results to samples from the asteroid Bennu in the near future, which will be returned to Earth by NASA’s OSIRIS-Rex mission.<hr />In late 2020, the spacecraft Hayabusa2 returned to from its mission to near-earth <a href="https://www.popularmechanics.com/space/solar-system/asteroid-sugar-discovery/" target="_blank">asteroid</a> Ryugu. With it, the craft brought back samples from Ryugu, which are still being analyzed and experimented on to this day.And just recently, that continued analysis produced an exciting result. A research team led by scientists from Hokkaido University in Japan just <a href="https://dx.doi.org/10.1038/s41467-023-36904-3" target="_blank">announced</a> that they detected uracil in the Ryugu samples—uracil being one of the building blocks of RNA.This is not the first time a nucleobase—the collection of chemical compounds that makes up DNA and <a href="https://www.popularmechanics.com/science/primordial-soup-theory-origins-of-life-darwin/" target="_blank">RNA</a>—has been found in an object from space. Researchers have been finding evidence of these compounds in meteorites for years.------ Post added on [DATETIME="UT"]1699578608[/DATETIME]</blockquote>

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