Scientists discovered the building blocks of RNA in a cloud at the center of the Milky Way, raising more questions about the origin of life.
The center of the Milky Way as observed with radio and x-ray instruments. Image source: NASA/CXC/UMass/Q.D. Wang & NRF/SARAO/MeerKAT
RNA, or ribonucleic acid, is a molecule similar to DNA. It’s present in all living cells and even behaves similarly to the more well-known double-helix. Unlike DNA’s double-strand, though, RNA is only made up of a single strand. Its overall part in the origin of life is unclear. But, there is some evidence the building blocks of RNA could have preceded DNA.
Could RNA have helped jump-start the generation of life in the universe? It’s possible. But, proving that will be tough.What the scientists found in the cloud, G+0.693-0.027 were nitriles, a group of organic molecules that may have been important in generating RNA in the early universe. The researchers say that the existence of these building blocks of RNA shows that the chemistry could take place in the interstellar medium.
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