Unraveling the Mystery of the Dark Night Sky

The question of why space is dark despite being filled with stars is known as Olbers' paradox. While it is true that distant stars appear dimmer, the main reason space is dark is because the universe is only about 13 billion years old, and the light from stars beyond that distance hasn't reached Earth yet. Additionally, the universe is expanding, causing the light from the most distant galaxies to be shifted into colors the human eye can't see. Eventually, all stars will burn out, and the universe will go dark.