Rainbows are actually full circles, but we usually only see an arc because the Earth's surface blocks the bottom half. To view a complete circular rainbow, one must be high in the sky, like in an ...

If you're high enough in the sky, the rainbow actually appears as a circle. But from the ground, we usually see only one arc. Isaac Newton was the first to figure out why rainbows exist.

Calling themselves the Rainbow Circle of King's Daughters, the young women raised money for Rainbow Cottage, where sick children could convalesce. Rainbow Cottage was opened in 1891 for the summer at ...