Atmospheric phenomena and sky
Rainbows, halos, aurora, coronae, cloud formations, storms. Also some other phenomena. The beauty in the sky!
Atmospheric halos
Natural phenomena that occur as light is being reflected and/or refracted by little ice crystals in the atmosphere.
Rainbows and fogbows
The colorful and milky white arcs that form in water drops in the atmosphere
Night sky
Starry skies, northern lights and other celestial nightscapes
High atmosphere
Noctilucent clouds, polar stratospheric clouds and volcanic ashes
Storms and cloudscapes
Lightning, cloud formations, crepuscular rays...
Coronae and other phenomena
Spheres and patterns of color caused by the scattering of light in the atmosphere. Also other atmospheric phenomena and celestial events.
Ice Crystal Images
These are the culprits behind halos. I've also included images of dendrites of various kinds although they mainly form pillars instead of elaborate and rare hal...