New Scientist Samples from asteroid Ryugu contain one of the building blocks of RNA https://www.newscientist.com/article/2365126-samples-from-asteroid-ryugu-contain-one-of-the-building-blocks-of-rna/ Hype AI Summary Samples from asteroid Ryugu, brought back by the Hayabusa 2 spacecraft in 2020, contain one of the essential building blocks of RNA, a molecule essential for life. This means that the asteroid could have been a source of life on Earth.