SMRTR Science & EngineeringMar 23, 2025Interesting Engineering

Supernova graveyard? 10 million years ago, neutron stars crashed on Earth, reveal traces

SMRTR summary

Earth may be a "supernova graveyard" containing debris from ancient cosmic explosions. Scientists found traces of radioactive plutonium in deep-sea samples, believed to be remnants of a kilonova explosion between two neutron stars 10 million years ago. Researchers hope to confirm this theory by analyzing lunar samples from upcoming Moon missions.

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