- #1
angela
- 2
- 0
- TL;DR Summary
- what happens if our whole universe which is enclosed by black matter lights up or if there's a source to emit light so the whole universe is visible...
Originally Answered: If light reaches the Earth from the sun, why is the space between the sun and the Earth dark?
Because light illuminates surfaces, objects. Space is not an object, is the lack of matter. If you turn on a flashlight in a dark room you will illuminate the floors and the walls, the light from the wall will bounce and illuminate the room a bit more, but if the air is clean, not too much dust, you are not illuminating the air.
In a room we are talking small distances, just a handful of meters, so once the light bounces from a wall the entire room seems to light up, even though what lights up...
![Backhand index pointing down :point_down: 👇](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f447.png)
![Backhand index pointing down :point_down: 👇](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f447.png)
![Backhand index pointing down :point_down: 👇](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f447.png)
I understand but what if something bursts in the universe the particles might scatter so we will be able to see the covered or dark matter.
Because light illuminates surfaces, objects. Space is not an object, is the lack of matter. If you turn on a flashlight in a dark room you will illuminate the floors and the walls, the light from the wall will bounce and illuminate the room a bit more, but if the air is clean, not too much dust, you are not illuminating the air.
In a room we are talking small distances, just a handful of meters, so once the light bounces from a wall the entire room seems to light up, even though what lights up...
![Backhand index pointing down :point_down: 👇](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f447.png)
![Backhand index pointing down :point_down: 👇](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f447.png)
![Backhand index pointing down :point_down: 👇](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f447.png)
I understand but what if something bursts in the universe the particles might scatter so we will be able to see the covered or dark matter.