Red Rainbows Imaged in Turkey by Aysun Ulger ©Aysun Ulger, shown with permission. The long traverse of sunset rays through the atmosphere scatters away their blues and greens. The remaining red-rich rays light low shower clouds and reflect once and twice inside the shower's fall to produce primary and secondary arcs. Sunset scattering Red bows Reflection inside raindops Primary bow Secondary bow Bows we never see