/tags/plutonium plutonium en-US WLRN Fri, 14 May 2021 11:19:22 GMT /news/2021-05-14/freshly-made-plutonium-from-outer-space-found-on-ocean-floor Something went boom in outer space and sent radioactive stardust our way, and it's just been found at the bottom of the ocean. Fri, 14 May 2021 11:19:22 GMT /news/2021-05-14/freshly-made-plutonium-from-outer-space-found-on-ocean-floor Nell Greenfieldboyce