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Atom & Cosmos

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map of next 15 total solar eclipses

IN THE SHADOW  Over the next two decades, more than a dozen total eclipses of the sun will take place around the world.

Milky Way

CRUNCH THE NUMBERS  Scientists estimate that the Milky Way contains 100 million black holes.

aurora

CHARGED UP  Auroras are triggered in Earth’s atmosphere by the solar wind, a constant stream of charged particles wafting away from the sun. This photo of an aurora was taken from the International Space Station on June 26.

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