Jeff Bezos has a vision to colonize space with a trillion people. We asked experts to put it to the test.

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Amazon CEO Jeff Bezos
Jeff Bezos dreams of a future where a trillion humans live inside gigantic space stations floating throughout the solar system.

AP/Ted S. Warren

A rogue star could save Earth from extinction in a billion years by knocking it out past Pluto

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An artist's impression shows the solar system seen from the Earth
An artist's impression of Earth's orbit around the sun.

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