Neil deGrasse Tyson Explains How Gravity Affects Time

Does gravity affect time? Does time pass differently on Jupiter than it does on Earth? Watch Neil deGrasse Tyson explain to Eugene Mirman why the clocks on GPS satellites aren't ticking at the same rate as the clocks here on Earth, and what the military is doing about it. Speaking of time, if you love StarTalk Radio, isn't it time you signed up for our free newsletter at http://www.startalkradio.net/newslett...

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