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Unlike the organic molecules found on Earth, the pitch-black asteroid samples, which the scientists found only reflect 2 to 3 percent of the light that hits them, have not been changed by interactions with Earth's environment, giving them a chemical composition much closer to that of the early Solar System.
"We detected various prebiotic organic compounds in the samples, including proteinogenic amino acids, polycyclic aromatic hydrocarbons similar to terrestrial petroleum, and various nitrogen compounds," Hiroshi Naraoka, a planetary scientist at Kyushu University and the leader of the team which looked for organic matter in the samples, said at the conference.
"These prebiotic organic molecules can spread throughout the Solar System, potentially as interplanetary dust from the Ruygu surface by impact or other causes."
Initially, sample analysis detected 10 amino acid types, but now the number has ballooned to more than 20, according to Japan's education ministry. Amino acids are the fundamental building blocks of all proteins and are indispensable prerequisites for the existence of life on our planet.
A 2019 study in the journal Geochimica et Cosmochimica Acta found organic molecules from space in a group of 3.3-billion-year-old rocks discovered in South Africa, raising the possibility that some – if not all – of these life-building molecules first came to Earth on comets and asteroids. The Ryugu findings make the evidence that asteroids carry these molecules even stronger.
"Proving amino acids exist in the subsurface of asteroids increases the likelihood that the compounds arrived on Earth from space," Kensei Kobayashi, a professor emeritus of astrobiology at Yokohama National University, told Kyodo News.
www.sciencealert.com...
originally posted by: everyone
a reply to: gortex
Interesting how all of a sudden congress is so involved in televised hearings about UFO's and that we now start to find evidence towards alien life, now that we a have global gas, food and housing crisis on our hands.
Yes, I'm very skeptical of their claims that this is returned from an asteroid 200 million miles away from earth.
originally posted by: everyone
a reply to: gortex
Interesting how all of a sudden congress is so involved in televised hearings about UFO's and that we now start to find evidence towards alien life, now that we a have global gas, food and housing crisis on our hands.
Yes, I'm very skeptical of their claims that this is returned from an asteroid 200 million miles away from earth.