Ancient ocean ice reveals radioactive stardust falling on Earth; should we be worried?

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Scientists discover radioactive stardust still falling on Earth from an ancient cosmic blast

Scientists often look to distant galaxies for answers, but sometimes those clues are hidden beneath Earth’s oceans. In a ...
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Earth's Core May Be Wrapped in an Ancient, Unexpected Structure

A representation of the underground imaging used in the study. (Edward Garnero and Mingming Li/Arizona State University) The ...
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Study links plutonium-244 in deep-sea crust to kilonova Nature Astronomy

Scientists uncovered traces of plutonium-244 in deep-sea crust, revealing a continuous cosmic rain from a kilonova explosion ...

Cosmic bombardment may have opened Earth's crust for prebiotic chemistry

Asteroids and planetesimals regularly bombarded Earth between about 4.6 billion and 3.5 billion years ago, during the Hadean ...

Deep-sea crust uncovers steady plutonium rain from ancient kilonova debris

Debris is still raining down on Earth more than 100 million years after the giant cosmic explosion that created it. A study published this week in Nature Astronomy by an international team reached ...