This image of a double rainbow was taken in the ...

A green flash can be seen at sunrise and sunset ...

A sun pillar is a glittering vertical shaft of ...

A silver lining, which sometimes can be seen ...

At sunrise or sunset, the sky may appear red ...

A full rainbow with anticrepuscular rays appears ...

When direct sunlight strikes falling rain, a ...

For a rainbow to form, water droplets must be ...

This photograph shows polar stratospheric clouds ...

These mystifying clouds are called Polar ...

A perhelia (sun dog) is a bright patch or ...

Patches of cloud occasionally develop iridescent ...

Halos form when light from the sun or moon is ...

This photograph was taken from the window of an airplane.

Crepuscular rays poking through clouds create a ...

Solar winds and other forms of solar activity ...

Anti-crepuscular rays are beams of sunlight that ...