The first look at samples returned by the Hayabusa2 spacecraft supports the theory that vital elements for life like amino acids could have been delivered from space.
, potentially dispersing as interplanetary dust particles after being ejected from the uppermost layer of the asteroid by impacts or other causes."
These compounds can be created by chemical reactions that don't involve living things, meaning that chemical processes within asteroids can create the ingredients for life. The search for these chemical processes that could have led to the emergence of life on Earth is known as"prebiotic chemistry."
"So far, the amino acid results from Ryugu are mostly consistent with what has been seen in certain types of carbon-rich meteorites that have been exposed to the most water in space," research co-author and NASA Goddard Space Flight Center scientist, Jason Dworkin, said. Missing thus far from the Ryugu sample are sugars and components of DNA and RNA that have been discovered in other carbon-rich asteroids. The team suspects it is possible these compounds are present in Ryugu but they are below the limits of detection given the small sample mass examined for this research., located around 215 million miles from Earth, in February 2019. The samples were then returned to Earth in December 2020, and they were extracted in Japan in 2021.
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