A halo (from Ancient Greek ἅλως (hálōs) 'threshing floor, disk') [1] is an optical phenomenon produced by light (typically from the Sun or Moon) interacting with ice crystals suspended in the atmosphere.

Feb 28, 2025 · Solar or 22-degree halos are defined as hazy rainbow-colored rings occurring at a radius of approximately 22 degrees around the sun. It results from the sun's light being refracted by ice crystals in Cirrus clouds in the upper troposphere at altitudes of …

May 31, 2023 · Have you ever looked up and spotted a large ring of light around the sun or moon? Scientists refer to these as 22-degree halos. They got that name because the radius of the circle is always...

A halo is a ring or light that forms around the sun or moon as the sun or moon light refracts off ice crystals present in a thin veil of cirrus clouds. The halo is usually seen as a bright, white ring although sometimes it can have color. Sundogs are colored spots of light that develop due to the refraction of light through ice crystals.

Apr 17, 2023 · A solar halo appears as a luminous ring, circle, or arc around the sun, often displaying a range of colors. But what causes this stunning spectacle to occur, and why is it so rare?

Oct 16, 2024 · Have you ever seen a sun halo? They're actually quite rare. See what causes a sun halo, the shapes that sun halos take on, and what a sun halo really means.

A 22° halo is an atmospheric optical phenomenon that consists of a halo with an apparent radius of approximately 22° around the Sun or Moon. Around the Sun, it may also be called a sun halo. [1] Around the Moon, it is also known as a moon ring, storm ring, or winter halo.

Jul 22, 2022 · A solar halo is a truly fascinating optical phenomenon. Learn more about circular halos, sun dogs, solar eclipse halos and more on the Rainbow Symphony blog!

Feb 27, 2025 · Halo, any of a wide range of atmospheric optical phenomena that result when the Sun or Moon shines through thin clouds composed of ice crystals. These phenomena may be due to the refraction of light that passes through the crystals, or the reflection of light from crystal faces, or a combination of.

Jun 7, 2023 · Fitzsimmons' image includes at least three different confirmed optical phenomena: a 22-degree halo, the large circle surrounding the sun; a pair of " sundogs," the bright points on each side of...