Since you would know that light always travels at the constant velocity with respect to all frame of reference, according to relativity, whenever we are traveling at the speed of light, our time with respect to a relative rest observer would become stopped. It means that light travels with respect to all frame of reference at the light-speed, so it implies that the light from the Sun would never reach us–but sadly it would reach us within 8 minutes. How is that possible?
[Physics] Does the Lorentz transformation not apply to light
observersreference framesspecial-relativityspeed-of-lightvisible-light
Best Answer
You have two facts.
The observer standing on Earth sees the light ray as taking eight minutes to cover the distance from the Sun.
The ray itself sees the universe as infinitely compressed so that no time elapses on it's travels (over any distance).
Both of the facts are correct. Both frames are equally valid, and physics works in both (though the zero proper-time frame of the light ray is rather boring).
The same phenomena can be observed in a less extreme way in the decay of muons created by cosmic rays.