Watch Neil deGrasse Tyson Answer Science Questions From Twitter

Watch Neil deGrasse Tyson Answer Science Questions From Twitter

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Watch Neil deGrasse Tyson Answer Science Questions From Twitter

Astrophysicist and host of “StarTalk” Neil deGrasse Tyson uses the power of Twitter to answer some common questions about our universe. What is a quark? Is there a limit to the expansion of the universe? Watch the video above to find out.

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