Show threadRTN5d ago

#UniverseToday:
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Plutonium in Earth Rocks Signals Long-ago Cosmic Collision
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"A small lump of rock pulled up from the Pacific Ocean seafloor in 1976 is giving scientists new clues about an ancient cosmic event. More than a hundred million years ago, two neutron stars collided. .."

https://www.universetoday.com/articles/plutonium-in-earth-rocks-signals-long-ago-cosmic-collision

18.6.2026

#ANSTO #Astrophysik #Cm247 #Curium247 #Eisen60 #Elementsynthese #Ferromangankruste #HZDR #Isotop
#Mangankruste #Plutonium244 #Pu244 #rProzess #Supernova #Tiefsee #Universum

Plutonium in Earth Rocks Signals Long-ago Cosmic Collision

A small lump of rock pulled up from the Pacific Ocean seafloor in 1976 is giving scientists new clues about an ancient cosmic event. More than a hundred million years ago, two neutron stars collided. The resulting energetic kilonova sent a rain of long-lived elements, such as isotopes of plutonium, through space. Eventually, this stellar

Universe Today
RTNJun 19

#HZDR:
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Kosmische Zeitzeugen

Radionuklide in Tiefseeprobe deuten auf uraltes kosmisches Ereignis hin
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".. in einer Mangankruste aus der Tiefsee seltene radioaktive Isotope nachgewiesen und damit neue Einblicke in die Entstehung der schwersten Elemente im Universum gewonnen .."

https://www.hzdr.de/db/Cms?pNid=99&pOid=77856

15.6.2026

#ANSTO #Astrophysik #Curium247 #Eisen60 #Elementsynthese #Ferromangankruste #Isotop #Mangankruste #Plutonium244 #rProzess #Supernova #Tiefsee #Universum

Cosmic witnesses: Radionuclides trapped in a deep-sea sample point to an ancient cosmic event - Helmholtz-Zentrum Dresden-Rossendorf, HZDR

An international research team has identified rare radioactive isotopes in a manganese crust from the deep sea, gaining new insights into the formation of the heaviest elements in the universe. Their results show that the last major astrophysical event in the vicinity of our solar system that could have generated such elements happened at least 100 million years ago. Published in the journal Nature Astronomy (DOI: 10.1038/s41550-026-02841-6), this international study was led by the Helmholtz-Zentrum Dresden-Rossendorf (HZDR).