Why does the sky turn red, orange, and pink at sunset? The phenomenon of scattering is also why the sky turns red, orange, and pink at sunset. Crucially, you need some cloud to see this.

What Determines Sky's Colors At Sunrise And Sunset?. ScienceDaily. Retrieved June 4, 2025 from www.sciencedaily.com / releases / 2007 / 11 / 071108135522.htm. University of Wisconsin - Madison.