Why does outer space look 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. 



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