The researchers replicated the conditions of an interstellar cloud and an asteroid to gain a deeper understanding of how carbonaceous chondrites acquired amino acids. A recent study led by Dr. Danna Qasim, a research scientist at the Southwest Research Institute, suggests that the conditions with
, suggests that the conditions within interstellar clouds may have had a substantial impact on the presence of key building blocks of life in the solar system.
To determine to what extent amino acids formed from asteroid conditions and to what extent they were inherited from the interstellar molecular cloud, Qasim and her team simulated the formation of amines and amino acids as it would occur in the interstellar molecular cloud, forming an organic residue . She then processed the residue under asteroid-relevant conditions, also known as aqueous alteration.
“I created ices that are very common in the cloud and irradiated them to simulate the impact of cosmic rays,” explained Qasim, who conducted the experiment while working at’s Goddard Space Flight Center in Greenbelt, Maryland, between 2020 and 2022. “This caused the molecules to break up and recombine into larger molecules, which ultimately created an organic residue.”
However, the individual abundances of amino acids doubled, suggesting that asteroid processing influences the amount of amino acids present.
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