Silicate Stardust Traces Histories of Dust in the Galaxy
NASA scientists are revealing the histories of dust particles from dying stars that roved the Galaxy for millions of years before the sun and planets formed. These stardust grains survived the harsh environment of deep space and were found in meteorites on Earth. During their journeys, these stardust grains were bombarded in space by high-energy cosmic radiation and shock waves from exploding stars, or supernovae. Scientists in the Astromaterials Research and Exploration Science Division at NASA’s ….