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Witnessing a Total Eclipse

What it was like to experience the rare celestial event

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MAGAZINE HIGHLIGHTS

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The Numbers Game

Astrophysicist Mario Livio talks about the math underlying life, the universe and everything.
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Hubble's Greatest Hits

NASA launched the Hubble Space Telescope 25 years ago this month, and it has done nothing short of rewrite how we see the universe.
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No Such Thing as a Black Hole?

New theories question just about everything we thought we knew about nature’s bottomless pits.
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