The sky can appear red at 4 am due to a phenomenon called scattering. As sunlight passes through the Earth's atmosphere, it interacts with air molecules and particles, causing some wavelengths of light to be scattered more than others.
- Sunrise and Sunset: During sunrise and sunset, the sunlight travels through a longer path in the atmosphere. This means the blue wavelengths of light are scattered away, leaving behind the longer wavelengths of red and orange.
- Atmospheric Conditions: The presence of dust, smoke, or clouds can also contribute to a red sky. These particles scatter light more effectively, particularly the red wavelengths.
- Location: The angle of the sun relative to the horizon can also influence the sky's color. At 4 am, the sun is still below the horizon, but its light may be scattered by particles in the atmosphere, creating a red hue.
