(Why is the sky blue? Learn about it with your kids.) The aurora borealis lights up the night sky behind Iceland's iconic Kirkjufell volcano. Auroras are caused when charged particles from the sun ...

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 ...

Stupid question, but” is a column answering the not-so-stupid questions that, at this point, we’re all too afraid to ask. The column encourages readers to become unabashedly curious ...

"Just as blue sunlight scatters in the Earth's atmosphere and makes the sun look slightly less blue, light from a strong blue, rich white street light enters your eyeball, scatters around in your ...