NASA's Bennu Asteroid Samples Suggest Origins of Life on Earth
Two recent studies reveal that samples from NASA's asteroid Bennu contain essential building blocks for life, potentially shedding light on how life began on Earth. The analysis was based on 120 grams of material collected by the OSIRIS-REx spacecraft during its 2020 mission and returned in 2023.
Initial studies had already indicated high-carbon content and water in the samples. Further research identified that evaporated water from Bennu's parent asteroid left behind a mix of salts and minerals, which are critical components for life, according to Tim McCoy, curator of meteorites at the Smithsonian’s National Museum of Natural History and co-lead author of one of the studies. He stated, "We have discovered that next step on a pathway to life."
The studies suggest that these findings could support the theory that life on Earth might have originated from extraterrestrial sources. The results also highlight the potential existence of similar conditions on other celestial bodies like the dwarf planet Ceres and Saturn’s moon Enceladus.
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