Samples From Asteroid Ryugu Contain Bits That Came From Outside the Solar System - by spacewriter
Carnegie scientists Jens Barosch and Larry Nittler worked with the Hayabusa2 Initial Analysis Team to determine the chemical makeup of the grains. They published their results in a recent paper in Nature Letters. It describes the dust grains and what they mean for our understanding of pre-solar system events. Essentially, the team did a series of microanalytical tests on the Hayabusa2 samples. Then they compared the results with similar tests done on carbonaceous chondrites found here on Earth.
“Different types of presolar grains originated from different types of stars and stellar processes, which we can identify from their isotopic signatures,” Barosch explained. “The opportunity to identify and study these grains in the lab can help us understand the astrophysical phenomena that shaped our Solar System, as well as other cosmic objects.”
Artistic impression of a star going supernova, casting its chemically enriched contents into the universe. An event like this not only creates dust grains but spreads through nearby space, where they can get swept up in star and planet formation processes. Credit: NASA/Swift/Skyworks Digital/Dana Berry
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