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

Deep-sea crust uncovers steady plutonium rain from ancient kilonova debris
Phys.org Monday 15 June 2026, 19:40 UTC 1 min read
Key Points

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 this conclusion using measurements of rare isotopes within a slow-growing ferromanganese crust recovered from the depths of the Pacific Ocean.

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 this conclusion using measurements of rare isotopes within a slow-growing ferromanganese crust recovered from the depths of the Pacific Ocean.
Earth (LOCATION) the Pacific Ocean (LOCATION)
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