22K views · 252 reactions | Bakit madalas blue ang sky? Alamin ang...

The sky turns red at sunrise and sunset due to a phenomenon called Rayleigh scattering. When the Sun is low on the horizon, its light has to travel through a much thicker layer of Earth’s atmosphere compared to when it is overhead. As sunlight passes through this longer path, the shorter wavelengths of light like blue and violet are scattered out in different directions by air molecules and small particles. This scattering removes most of the blue light from our line of sight, allowing the longe