Dark Wallpapers

bóng tối là một bầu không khí đó là tất cả vô hình.

Dream - Darkness of night is a natural phenomenon. However, there is no definitive explanation of the question, 'Why is the night always dark?' Some people may easily reply, "Yes because there is no sun."

However, the same question once made the German astronomer, Heinrich curious in 1823. He asked if the universe is infinite and filled with billions of stars that shine brightly, is not it supposed to be as bright as daylight?

For this contradiction, the academic world calls it the Olber Paradox. While the layman named it a dark sky paradox.

Download this app so you can get the dark wallpaper you want.