why does light not lose any speed? How does it stay consistent over millions and millions of light years?
In: Physics
Because it’s a fundamental property of light and a the universe itself. I know that’s not a satisfying answer, but that’s just the way it is. When we’re talking about fundamental aspects of the universe, at some point you can’t dig any deeper and you just have to understand that it’s how the universe works. Light always and only travels at the speed of light of whatever medium it’s in, or in a vacuum, at 299,792,458 m/s. It doesn’t matter if it’s been traveling for 1 second or 13 billion years.
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