Scientists have discovered significant organic molecules in samples from asteroid Bennu, which was brought back to Earth by the OSIRIS-REx spacecraft. Analyzing the first scientific papers on these samples revealed the presence of 14 essential amino acids and all five nucleobases that make up DNA and RNA. Furthermore, the analysis indicates the presence of evaporated brine minerals, suggesting that Bennu's parent body once had liquid water and critical life-building compounds. Overall, these findings offer evidence towards understanding the chemistry that may lead to life in the early solar system.
Bennu contains 14 of the 20 essential amino acids and five nucleobases for DNA and RNA, suggesting it had a suitable environment for life's key components.
The samples revealed a rich inventory of organic molecules, including ammonia and formaldehyde, indicating multiple development stages critical for the origins of life.
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