It might seem like a simple question. But the science behind a blue sky isn't that easy. For starters, it involves something ...

Ever wonder why the sky is blue, vs. say red, orange or purple? An effect called Rayleigh Scattering is part of the reason we ...

If Earth had no atmosphere like the Moon there would be no scattering, and the sky would remain black, even in daylight ...

When the Sun is near the horizon, its light passes through a lot more of the atmosphere to reach the Earth's surface than ...

It was around 1870 when the British physicist John William Strutt, better known as Lord Rayleigh, first found an explanation ...

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 ...

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Multiple Scattering Directions – Scattered blue light reaches our eyes from all directions, making the sky appear blue. Sunset and Sunrise Effect – During sunrise and sunset, sunlight passes through ...

When the Sun is near the horizon, its light passes through much more of the atmosphere to reach the Earth's surface than when ...