Plutonium Found in Deep Sea Points to Nearby Cosmic Blast 3 Million Years Ago

#shorts #Earth’s core #star’s death #heavier elements #stars Scientists have discovered that a kilonova, a rare event that only happens when two neutron stars collide, occurred 3.5 to 4.5 million years ago. The explosion was so powerful that it produced both plutonium-244 and Fe-60, which are two radioactive isotopes that are usually only found in stars that have exploded. The good news is that the kilonova was far enough away from Earth that it didn’t cause any damage. But if it had been closer, it could have triggered a mass extinction. The ape-like creatures that were just starting to evolve in Africa at the time may have looked up at the sky and wondered what the bright light was that wasn’t there the week before. But mostly, they just kept on evolving on their path to becoming Homo erectus.

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