This question may also be asked as "Why is space never illuminated by the light emanating from the Sun?". So, this is an interesting concept but its much easier. But if you want to know the reason you must agree with a fact that we do not see light unless it is being absorbed by our eyes, right?
If you agree with this, let us go deeper.
We only see light sources if the photons emitted from them are being absorbed by our eyes. For example, I see a chair because the photons from the chair are being reflected into my eyes. I see a light turned on because the light is emitting photons into my eyes. We cannot see photons that are not absorbed by our eyes.
How can you tell if you have turned a flashlight on in a dark room?
That’s easy. A spot of illumination will be made on the wall and all of the dust particles caught in the path of your beam of light will also illuminate, sending reflected photons back to your eyes. You can not see the actual light beam itself being projected from the end of your flashlight to the wall, but you can infer.
Now what happens if we take away the dust particles? Well, then everything would be the same except for the missing dust particles.
But wait a second, what happens if you get rid of the wall? Now here is where it gets interesting.
How do you know that the flashlight you supposedly “turned on,” is even on? This is assuming you are not looking at the bulb, but rather the path of light it shoots out.
Well, you can’t. Unless you use some sort of mechanism where photons are being shot into your eyes, such as the wall reflecting the photons back at you or the dust particles illuminating, you can not know for sure.
But there is one way you can, and it’s to look directly into the bulb. We can’t use the wall or the dust anymore, because we removed it from the equation. This is where my theory comes in.
Mine and everyone's theory states that we can only see photons if they are being absorbed by our eyes.
This is the exact phenomena that occurs in space, except on a vastly larger scale. We can not see the photons being emitted from the sun unless we look directly into it. This is why space is dark; it’s like turning on a flashlight in a room with no dust and no wall to project it’s light beam on.
We infer that the sun emits light because we can see, during the day, that is. We infer that the sun is doing its job when we look at Saturn, or Jupiter, or our own moon for that matter. We see the light reflected into our eyes from the moon, and assume that those rays were originally from the sun.
The End Notes
We never see the massive beam of light that comes from the sun, hits the moon and then our eyes, do we?
No we don’t. Anyways, that’s just what I think. And that’s my theory. I’ll call it, The Cutter’s imperceptible light phenomena. Or maybe Cutter’s light for short.
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