life before the garden?
coolThese include molecules of biological interest, such as amino acids, nucleobases and amphiphiles, which make up the building blocks of proteins, RNA and DNA, and cellular membranes, respectively. Irradiated ices should have produced these same sorts of molecules during the formation of the solar system, he said.
The grains also moved in and out of warmer regions in the nebula. This completes the recipe for making organic compounds: ice, irradiation and warming.
"It was surprising how all these things just naturally fell out of the model," Ciesla said. "It really did seem like this was a natural consequence of particle dynamics in the initial stage of planet formation."