Color of the Sky

The sky's color varies due to Rayleigh scattering, which explains why it often appears blue but can shift to red, yellow, or orange during sunrise and sunset. Interestingly, a green sky can signal stormy weather, particularly before a tornado. On Mars, the atmosphere's composition leads to a butterscotch hue, influenced by iron-rich dust, while unique atmospheric conditions could create different sky colors on exoplanets.