Analysis of OSIRIS-REx Sample Shows Asteroid Bennu Has Ingredients for Life
When exposed to formaldehyde, which was also detected, ammonia can form amino acids, the building blocks of proteins. According to the study in Nature Astronom y, the team also found 14 of the 20 amino acids present in Earth-bound life in the Bennu sample. In addition, Bennu contains all five of the nucleotide bases present in DNA and RNA.