Space & Atmosphere
Why Are Sunsets Red?
Sunsets are red because sunlight travels through far more atmosphere at a low angle, scattering away blue light and leaving only red and orange to reach your eyes.
sunsetlight
Light & Atmosphere
Why Is the Sky Blue?
The sky is blue because blue light scatters off air molecules more strongly than red light, filling the daytime sky with scattered blue wavelengths.
skylight