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What is the universe expanding into?

Come on, admit it, you've had this question. "Since astronomers know that the Universe is expanding, what's it expanding into? What's outside of the Universe?" Ask any astronomer and you'll get an unsatisfying ...

dateNov 28, 2013 in Space Exploration
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Flexible paper robots

(PhysOrg.com) -- These inexpensive robots can stretch, bend and twist under control, and lift objects up to 120 times their own weight. Being soft, they can apply gentle and even pressure, and adapt to varied ...

dateFeb 09, 2012 in Materials Science
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'Area 51' exists, but no UFOs: CIA paper

A newly declassified CIA document confirms the existence of famed Area 51 in Nevada, but conspiracy theorists will be disappointed the spy agency offers no proof of alien spaceship landings in the desert.

dateAug 17, 2013 in Other
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