Moonmoons, Gravitons, and More!
StarTalk Radio
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The Greenwich Prime Meridian
Where you are only has meaning in reference to something else. The prime Meridian was established by international agreement. And I could remove all matter from the visible universe. Where would I be? That's what I'm putting me on my long walks with your podcast. My long walks to the edge of the universe. Yeah, don't walk too far.
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