They’re often seen as lucky, but try to find the end of the rainbow in this incredible image and you might struggle. NASA has revealed a stunning photo of what looks like a circular rainbow ...

Rainbows are formed when sunlight strikes the curved inside of a raindrop at a specific angle and is reflected back through the water, creating a prism effect ... the case of a circular one.

Tyndall describing experiments made to produce circular rainbows by artificial light and ... I was so fortunate as to see lately identically the same effect produced with remarkable beauty and ...

An optical effect known as a Brocken ... for you to see many different rainbows,” park officials said on Facebook on Saturday. “Check out this circular rainbow known as a Brocken spectre ...

There might not be a pot of gold at the end of this rainbow, but viewers would certainly count themselves lucky. Breathtaking new footage of an extremely rare circular rainbow has surfaced this ...

They’re often seen as lucky, but try to find the end of the rainbow in this incredible image and you might struggle. NASA has revealed a stunning photo of what looks like a circular rainbow ...