(Craig Taylor/iStock/Getty Images Plus) A sprinkling of radioactive plutonium atoms hidden in the ocean floor may trace back ...

Debris is still raining down on Earth more than 100 million years after the giant cosmic explosion that created it. A study ...

Researchers have detected the isotope plutonium-244 in the Pacific seabed. It was created by a cosmic explosion that occurred ...

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

An international research team detected rare radioactive isotopes within the Pacific Ocean crust, tracing them back to an ...