The photo above, captured about an hour before sunset at our home in west-central Missouri, shows a “mackerel sky” composed of cirrocumulus undulatus clouds. Photographers
The photo above showing a colorful sundog heeling the horizon was taken in Trento, Italy on the afternoon of November 29, 2011. Photographer: Alessandro Zotta
The particularly colorful halo featured above was snapped at Yamdrok Tso Lake, Tibet on October 29, 2011. This is a 22-degree halo — the radius
Cloud iridescence is a fairly uncommon phenomenon and is usually observed in altocumulus, cirrocumulus clouds, most frequently seen near to the sun when small ice crystals in
It looks like a rainbow, but the colourful spectacle is actually a rare weather phenomenon called a sundog. It is caused when the sun refracts
The American flag flaps in the breeze against the backdrop of a halo around the sun at the US track and field championships in Eugene,
Halo, also known as a nimbus, icebow or Gloriole, which is an optical phenomenon produced by ice crystals in cirrus clouds high in the upper
The photo above showing an eye-catching 22-degree halo and upper tangent arc was captured just before sunset over Dayton, Ohio on January 21, 2011.
A rare ice rainbow in the sky above the Isle of Wight that left people wondering if they had witnessed a UFO. The phenomenon known
A rainbow cloud, looking like a reclining figure, is seen over the Himalayas. Astronomer Oleg Bartunov, 51, caught the spectacle on camera as part of
