I was just building and flying around in my Creative mode world when I thought I saw something peculiar. I flew down into the void, and I saw a glowing square thing that looked like the sun/moon. It was like the sky was reflected into the void, except with no clouds. Not sure if that's how the sun/moon cycle does it's thing..

I thought that the void would just be that blank blue thing it usually is, but for some reason it wasn't.
There was just... A sun. In the void.

Note: Creative mode should probably be used.. You can't break bedrock in Survival.
1. Break through bedrock.
2. Look through the whole or go into the void.
3. Directly beneath the player/you should be a weird sun/moon glowing square thing

Also, just noting that even while flying, I still died in the void.