Could a photon go slow if...?

Question

If a light source were traveling at the speed of light, (or damn near it, for those that say nothing goes that fast) the photons emmited in the direction opposite of the direction of the traveling emitter would be going way slower, right?

To take this further, could the photon be said to be standing still by an observer from which the emmiter was traveling away from at speed c?

Answer 1

No, because c is constant unaffected by the motion of the source. Let's talk about the case you have presented. In it the photons' velocity wouldn't decrease but the thing that would decrease will be their frequency. It will be redshifted means it will be shifted towards the red end of spectrum. For more information about it see sources.
Now let's talk about the second case (this answer is also for the first case but is more easy to understand in the second case). If we take the einstein's principle of time dilation into account we would see that :

Suppose you are travelling near the speed of light away from a photon. This means that your time would be running very very slow. It means that the outside world will seem to you very fast (you would not be able to decide that your time is running slow because the molecular energy of your body would also be slowed). So, the photon will dash past you at c because photon's time is running at the same pace. It is always relative. No matter how fat you go, more or less, the time would always slow according to the speed of light.
My friend, you have also asked about the question of why mass is relative is very fantastic but I know the answer of that also but it was deleted by a mistake. Sorry.

Answer 2

No.

The speed of light is a constant. It will travel at the same speed regardless of how fast its emitter is travelling.

As a result, we understand that as one begins to move *very* quickly, time ceases to become a constant.

For instance, if you were to fly in a rocket at near the speed of light for, say, forty years, you would come bcak to find that everything around you had traversed many more years, depending on just how fast you were traveling.

Note that this phenomenon only occurs to a degree that supercomputers can measure with existing technology. The most noticeable temporal displacement one could achieve with current technology would be by living on the International Space Station for a year or two, which might displace you for a quarter second or so.

Answer 3

That's a question that Einstein pondered and which resulted in his development of Special Relativity. The answer is that light speed is the same in any reference frame. It's weird and counter intuitive but that's the correct answer.