Ahh the wonderful universe, with it’s lovely galaxies and vibrant cosmic clouds and enigmatic planets, everyone is left enchanted by it. But many of us wonder, despite the universe having gigantic sources emitting powerful amounts of light, why is space still black in colour?
A region with no light is usually dark or black with nothing visible, but the universe is full of light and vibrant, so why is most of it still black? The answer isn’t quite complicated, generally light travels in a straight path.
However, deviations occur if a lens obstructs it’s path or if reaches a reflective surface and bounces off. Usually, space doesn’t have a lens or a mirror-like surface and is mostly empty. If you still can’t get it then imagine a laser pointer from a laser toy.
Point the laser at a plain surface and you will only see a red dot but you won’t see the beam of light and it’s rays making up the bright red dot. This is because all the light has been concentrated on one spot and doesn’t have anything to deviate its path.
The universe behaves in the same manner. Since, most of outer space is empty, imagine that as a plain surface while the sources of light as laser and you will see heavenly bodies and gas clouds floating around in a black background.