Interstellar dust has been found in Antarctic ice samples. The discovery could provide a way of mapping the clouds of dust Earth has passed through in space
Source:
https://www.newscientist.com/article/2213362-radioactive-dust-in-antarctic-ice-could-help-map-interstellar-clouds/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home