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Particles forged in the heart of a nearby supernova are still raining onto Earth today

Particles forged in the heart of a nearby supernova are still raining onto Earth today

Most of the cosmic rays that rain down on our planet today were forged in a nearby supernova that exploded no more than a few million years ago, according to a new study. 

The findings, published Thursday in the journal Science, confirm another recent study that suggests a large star in our galactic neighborhood went supernova about 2.3 million years ago.

"It's exciting to see two completely different observations point in...

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