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Star Crushing Black Holes! - The Countdown # 4

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Published on Sep 6, 2012

SUBSCRIBE, future astronauts: http://goo.gl/bRbj4
THE TOP 5 are listed BELOW!!

CLICK HERE to learn more about this week's Top 5: http://goo.gl/MD2tS
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THE TOP 5:
Cave-Dwelling Astronauts
Two-Star Solar System
Voyager on The Edge
Millions of Quasars
New Mars Mission
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Watch more of Scientific American's The Countdown: http://goo.gl/JnNep

GET THE SPACE LAB PAPERCRAFT: http://goo.gl/tU7mn

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