The scale of time in fields like astrophysics and geology never ceases to amaze me. When I saw freshly made, I thought it was recently created. Turns out it dropped on earth some time in the last 10 million years.
An international scientific seafloor drilling project has drilled over 1500 deep holes in the past half century. The oldest seafloor sediments go to 220 million years. Anything older has been consumed by plate tectonics subduction.<p>Scientists could count Pu244 in these cores to see how many nearby supernovae there were.
This may explain why that fish walked out of the water so long ago.<p>Earth may have been a cooling tank for spent fuel rods used by an alien civilization. Ocean water levels depleted as a result of the cooling process which exposed the land masses. Radiation from the spent rods did radiating things to the surrounding organisms.<p>IPSO FACTO, we're a result of the super powers bestowed to our watery ancestors.<p>*edit /fiction ... because some people took this as super serious
Somebody probably just ordered some highly radioactive isotopes from Advanced Space Civilization Amazon, and told them to leave it at the doorstep.<p>Either that, or the dolphins are done putting up with our shit.
"The Pacific Ocean is a major repository of plutonium released from atmospheric tests of nuclear weapons. Both global fallout from plutonium released to the stratosphere as well as close-in fallout from the troposphere contributed to the present levels of plutonium in seawater and sediment of the Pacific Ocean." [2001: <a href="https://www.sciencedirect.com/science/article/pii/S156948600180019X" rel="nofollow">https://www.sciencedirect.com/science/article/pii/S156948600...</a>]<p>Now <i>that is</i> fresh. NPR's article fails to tell us how we can tell 'space' Pu from 'test' Pu. It further confounds the issue by calling it 'freshly Made Plutonium From Outer Space' then stating that fresh means 'arrived on Earth within the last 10 million years'. <i>Bad</i> science article.