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Scientists Find Extraterrestrial Isotopes on Ocean Floor & More 'Alien' News

A new analysis of isotopes in the ocean crust revealed radioactive materials that could only have arrived here from outside our solar system. Here's what their presence means in the search for extraterrestrial life and why it could help us better understand the physics of cataclysmic events like supernovae. Plus we've got all the latest 'alien' news you may have missed.

Scientists Find Extraterrestrial Isotopes on Ocean Floor & More 'Alien' News

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