“All signs are that amino acids are going to be found throughout the galaxy,” Freeland said. “They are apparently obvious building blocks with which to construct life. What we're finding hints at a certain level of predictability in the way things turned out.”
Elsewhere, a recent mathematical analysis says that life as we know it is written into the laws of reality. DNA contains four deoxyribonucleotides, with the nitrogenous bases adenine (A), guanine (G), cytosine (C), and thymine (T). The code contained within the base sequence is ultimately translated into proteins, which are constructed from the 20 amino acids.