I can understand if you are travelling away from a light source faster than light can travel, you can only see darkness, but out in our galaxy or universe, there is plenty of light sources in every which direction. Would it still be complete darkness, or will it be blinding light?
For example, you have water flowing down a river and an empty can. If that empty can is moving against the water faster than the water is flowing against it, the water doesn’t stop existing, but more flows in faster than it would otherwise. I am terrible at explaining things, I don’t know if I said what I meant properly.
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You can’t travel faster than light. In fact, from your perspective, light always appears to be moving at its full speed *relative to you*.
As you approach light speed, light coming from behind you gets redshifted, and light in front of you gets blueshifted. They would both become invisible to the human eye eventually, leaving you with only the light coming from just the right angle range for it to remain visible.
Look at this…
This is a game that simulates different speed of lights
[http://gamelab.mit.edu/games/a-slower-speed-of-light/](http://gamelab.mit.edu/games/a-slower-speed-of-light/)
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But if you move faster than the speed of light… everything that you move away from would be red/black and everything you move away to would be “blue” because of the doppler shift…
Also keep in mind that light resistance is not fun when you are bombarded with photons that can go faster than light… like hitting a bowl of pebbles
Not to mention light shifting in UV and X-ray ranges… that would be really bad
But i’m ont a physicist
Using your can analogy, the light that has just bounced off you, you have just ‘ran into’ with your eye. Can you see yourself in the past?
The speed of light isn’t about light, but the fastest anything can travel in the universe. When you pick up a stick, does the whole thing move up at once? Or does the end you grab move up first and pull the rest of the stuck up in a kind of wave? If things move faster than the speed of light then you could pick up the stick but the other end moves up before your hand does. Breaking the speed of light breaks causality and causes you to move backwards through time and is also probably, almost definitely, impossible.
I’m not sure I fully understand your question but there are 2 things to note that make your question irrelevant. First is that you can never travel at or faster than light. Second is that no matter how fast you are moving, light always appears to you to be moving at its full speed. The speed of light is just under 300,000km/s. This means that if you are moving at 299,000km/s and you shine a flashlight forward, you don’t see the light only moving forward at 1,000km/s, it’s still moving, from your perspective, forward at 300,000km/s.
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