Albert Stevens - Wikipedia
https://en.wikipedia.org/wiki/Albert_StevensExtremely Rare Plutonium Found in the Depths of Pacific Ocean Could Be Older Than Our Solar System
https://www.news18.com/news/buzz/extremely-rare-plutonium-found-in-the-depths-of-pacific-ocean-could-be-older-than-our-solar-system-3740864.htmlFreshly Made Plutonium From Outer Space Found On Ocean Floor : NPR
https://www.npr.org/2021/05/13/996499035/freshly-made-plutonium-from-outer-space-found-on-ocean-floorPlutonium(III) chloride - Wikipedia
https://en.wikipedia.org/wiki/Plutonium(III)_chloride