A large international team of space scientists and geochemists has found preserved presolar silicate grains in surface samples collected from the Ryugu asteroid by the Japanese space probe Hayabusa2 in 2018 and 2019 and returned to Earth in 2020. In their study, reported in the journal Science Advances, the group found two clasts (unique and identifiable fragments of rock) in Ryugu samples.
Click here for original story, Preserved presolar silicate grains found in Ryugu samples
Source: Phys.org