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New Study Links Ancient Climate Change to Interstellar Cloud Passage

About two million years ago, the Solar System may have passed through a dense cloud of hydrogen and radioactive material. It compressed the heliosphere, the protective cocoon the Sun provides for Earth and the other planets. It's shown here as the dark gray bubble over the backdrop of interstellar space. This could have exposed Earth to high levels of radiation and influenced the climate, and possible human evolution. Photo courtesy of Opher, et al., Nature Astronomy
3 articles | last updated: Jun 12 01:39:02

Research suggests Earth's climate may have been influenced by dense gas clouds in interstellar space millions of years ago.


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