A 10-million year time profile of interstellar influx to Earth mapped through supernova Fe-60 and r-process Pu-244
Interstellar radionuclides are contemporary witnesses of nucleosynthesis in the universe and can be used to constrain nucleosynthesis models as well as to investigate interstellar medium dynamics and transport of interstellar dust. Live traces of the supernova-produced radionuclide 60Fe were detected in several geological archives on Earth and on the Moon, demonstrating the influx of interstellar dust from near-Earth supernovae within the last 10 Myr. The recent discovery of the r-process...[Show more]
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