Noctilucent clouds, Earth's highest clouds, shine blue in the twilight sky from late May to August in the northern hemisphere — and all you need are your naked eyes.

Why is the sky blue on Earth, yet space appears pitch black? This video uncovers the science behind one of nature’s most ...

PHILADELPHIA (CBS) -- A fiery sunset wrapped up the first weekend of November, and the clouds had everything to do with its gorgeous hues. CBS3 viewers captures some stunning images of the sunset ...

On Earth, it is the other way around. Blue light bounces off air molecules giving our sky its characteristic hue, and at sunset and dawn, those longer wavelengths are predominant.

On Uranus, the sunset sky transitions from blue to turquoise, according to NASA. And on Titan, one of Saturn's moons, the sky turns from yellow to orange to brown as the sun dips beneath the horizon.

Don't miss the waxing crescent moon shine alongside Spica and the stars of the constellation Virgo in the hours following ...

YOUR PHOTOS: Clouds from Idalia illuminate the sky during Wednesday sunset Thank you for submitting your sunset photos through Pin It. Clouds from Idalia made for a gorgeous sunset Wednesday evening.

Tuesday morning fog burns off with sunshine peeking through broken clouds. As the day goes, high pressure and southeast winds ...

Saginaw Blue sky provides hope behind gray clouds of economic woe Published: Apr. 28, 2009, 4:38 p.m. By Bill Cornish | The Saginaw News ...

LOUISVILLE, Ky. (WAVE) - We see our skies as blue unless, of course, if clouds cover them. During the Fall and Winter, skies appear more vibrantly blue than during the summer months. In the summer, ...