Fire rainbows aren't actually rainbows and they have nothing to do with fire, either. Technically known as circumhorizontal arcs, these optical phenomena occur when the sun is higher than 58° in the sky. The other ingredient forming these arcs are cirrus...

Fire rainbows aren't actually rainbows and they have nothing to do with fire, either. Technically known as circumhorizontal arcs, these optical phenomena occur when the sun is higher than 58° in...

Neringa Utaraitė

Residents of Isle of Palms, South Carolina, were surprised by what they saw in the sky this past Sunday. A so-called “fire rainbow,” a twisted and colorful cloud, appeared in the sky and lingered for about an hour. The technical term...

Residents of Isle of Palms, South Carolina, were surprised by what they saw in the sky this past Sunday. A so-called “fire rainbow,” a twisted and colorful cloud, appeared in the...

Dainius