When the Sun is high in the sky, it appears its true colour: white. At sunrise and ... you can see the blue sky fade away to a black background as it climbs above the atmosphere.

The bag, pristinely white, its surface marked by forgiving wrinkles, is set against a subtle gradient-blue background that looks like the sky. It might have been tossed away and carried upward by ...

One of the first questions a curious child often asks about the natural world is "why is the sky blue?" Yet despite how widespread this question is, there are many misconceptions and incorrect ...

Look up on a clear sunny day and you will see a blue sky. But is this the true color ... which we see as white but it includes all the colors of the rainbow. When sunlight passes through the ...