One among those concepts is, “Why does the sky appear blue during the day but space looks pitch black?” Doesn’t it really wreck the human mind? To truly get an answer to this, we need to ...

This blue band, which first expands outward from the black spot at the ... in the whiteness of the background, and this is fully verified by experience. The sky is generally more or less milky ...

If you’ve ever seen video of a rocket going into space, you can see the blue sky fade away to a black background as it climbs above the atmosphere.