“Time flows. Choose any coordinate system and you can stand still in space but not in time.”
Not for anything that moves at the speed of light, such as a photon or graviton. For them, time supposedly stands still. And, if I got it correct, distance doesn’t exist.
Its all relative.
“So now, with all of that in mind, let’s come to the photon itself. It’s not moving near the speed of light, but actually at the speed of light. All our formulas to describe what it’s like for an observer gives us answers with infinities in them when it comes to asking what happens at the speed of light. But infinities don’t always mean physics is wrong; they often mean that physics does something unintuitive.
When you move at the speed of light, this means the following:
You absolutely cannot have a mass; if you did, you’d carry an infinite amount of energy at the speed of light. You must be massless.
You will not experience any of your travels through space. All the distances along your direction of motion will be contracted down to a single point.
And you will not experience the passage of time; you entire journey will appear to you to be instantaneous.
The Earth-Sun distance takes a little over eight minutes for light to traverse from our perspective. But from a photon’s perspective, the journey is instantaneous.
For an observer here on Earth, the light will be emitted from the Sun some eight minutes (more like 8:20) before we receive it, and if we could “watch” the photon travel, it would appear to move at the speed of light throughout its entire journey.
But if there were a “clock” on board this photon, it would appear to be entirely stopped to us. While those just-over-eight-minutes would pass as normal for us, the photon would experience absolutely no passage of time.
This gets particularly disturbing when we look at distant galaxies in the Universe.
http://www.forbes.com/sites/startswithabang/2016/09/30/how-do-photons-experience-time/#6a45946c687f