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16-08-01, 05:34 PM

I'm not too sure, but I'll try to figure out the ray.

It is indeed 1 million light years in length. You can think of it as one long moving line of cars. Or perhaps think of it as a continuous stream. Such a stream may look like a single connected thread, but the thread analogy is wrong because what happens at the beginning supposedly doesn't affect what happens at the end. In other words, the star turning off its lights now wouldn't affect the light that was already emitted 1 million years ago, which we're seeing just now. Also, if the star turned off the lights temporarily, it would just create a gap in this thread-like-looking ray of light.

But then again, I'm not too sure. Maybe it is one long thing, and the end of it has some effect on the beginning of it, in ways that we haven't discovered yet. But to believe so, would be to believe that some things can travel faster than the speed of light.

16-08-01, 05:34 PM	#16
eclectica Posts: n/a	I'm not too sure, but I'll try to figure out the ray. It is indeed 1 million light years in length. You can think of it as one long moving line of cars. Or perhaps think of it as a continuous stream. Such a stream may look like a single connected thread, but the thread analogy is wrong because what happens at the beginning supposedly doesn't affect what happens at the end. In other words, the star turning off its lights now wouldn't affect the light that was already emitted 1 million years ago, which we're seeing just now. Also, if the star turned off the lights temporarily, it would just create a gap in this thread-like-looking ray of light. But then again, I'm not too sure. Maybe it is one long thing, and the end of it has some effect on the beginning of it, in ways that we haven't discovered yet. But to believe so, would be to believe that some things can travel faster than the speed of light.