Scientists explain what makes a double rainbow. Dec. 23, 2010— -- The Internet just can't get enough of those double rainbows. After a double rainbow formed over Los Angeles last night, Twitter ...

Double rainbows had their 15 minutes of fame on the Internet. Now get ready for their even more mysterious cousins: twinned rainbows. New research has suggested an explanation for these exotic shows ...

Marc Weinberg was tagged in this picture on twitter today and noticed something different about the rainbow. Can you see the faint bow lines? Those are known as supernumerary rainbows... Hannah Strong ...

Scientists have yet to fully unravel the mysteries of rainbows, but a group of researchers have used simulations of these natural wonders to unlock the secret to a rare optical phenomenon known as the ...