YESTERDAY evening a most extraordinary sunset effect was seen here, which made a deep impression on all who observed it. The sky was nearly clear when the sun set at 4.18, and the air transparent. A ...

Longer Wavelengths: Conversely, red light, which has a longer wavelength, scatters less. When the sun is low on the horizon, its light must traverse a greater distance, causing the blue light to ...

The coastline turns into a canvas of deep purples and fiery oranges as the sun sets behind the sea. This peaceful moment ...

Amazing atmospheric optics in action. Often times during the year, the peaks of the Santa Catalina Mountains glow during dusk and dawn. It’s a phenomenon known as “alpenglow”. Here’s how it works. As ...