Past, Present, Future: Time Travel with Brian Greene
StarTalk Radio
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Is There a Time in Time?
Jay Salmon: A photon of light has no mass, theoretically. Can't it travel both forward and backward in time? Well, I love that. And speaking of gravity and it's... No, wait a minute. So it moves the speed of light. Right. And if time goes slower for you, the faster you go, then photons have no time. At all. Okay. Let me get to the query. Brian Casched on the photon. You said it has no emotions, no feelings. Basically, Brian thinks photons are stupid. All right,. We know where you're coming from. All right, let's... okay, let's ... proceed.
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