The absence of light in the sky leaves it black. The sun is a pale yellow. Where does the sky's blue color come from? ‘Why is the sky blue' tends to be a ...

Put these three things together, and a blue sky is inevitable. Here's how it all comes together. Light of many different wavelengths, not all of which are visible, are emitted by the Sun.

Why is the sky blue and where does it start? – Oliver Scott, age 7, Wombarra. This is something that parents get asked every day. And it’s a great question, Oliver!

Why is the sky blue? – Mariana A-E., age 11, Tucson, Arizona. You might think that explaining why the sky is blue would be kind of simple. But even a brief explanation of it requires a lot of ...

On a clear, sunny day, the sky above us often glows a brilliant blue, a sight so commonplace that many of us rarely stop to question why. While this natural phenomenon might seem simple to explain ...

The color blue is all around us, but where does it come from? In Blue, written by Nana Ekua Brew-Hammond and illustrated by Daniel Minter, the answer is as deep as the sea and wide as the sky.

The writer recalls very vividly the blue aspect of the sky as seen from the top of the San Francisco Mountains in Arizona, which have an altitude of 13,000 feet above the sea; and in an ascent of ...

Saturn is where all the action is at this evening, as the planet’s brightest moon, Titan, slips beneath Saturn’s south pole. The planet rises around 9 P.M. local daylight time and stands more ...