Why is Space So Black?
Look up at the night sky with your own eyes, or marvel at images of the universe online, and you’ll see the same thing: the inky, abysmal blackness of space, punctuated by bright stars, planets or spacecraft. But why is it black? Why isn’t space colorful, like the blue daytime sky on Earth? Surprisingly, the answer has little to do with a lack of light. “You would think that since there are billions of stars in our galaxy, billions of galaxies in the universe and other objects, such as planets, that reflect light, that when we look up at the … Read more