We all know rainbows-those colorful arcs that appear after rain when sunlight bends through water droplets. But have you ever heard of a moonbow? Unlike regular rainbows, moonbows appear at night, ...

With enough rain droplets, you can see a rainbow ... Isaac Newton Used a Prism to Prove Rainbows Had Seven Colors Isaac Newton loved experiments. During an experiment with prisms, he discovered ...

Grand Prismatic Spring in Yellowstone National Park is the largest hot spring in North America and the third-largest in the ...

Hawaii's regular sunshine, short rain showers and clean air come together to create some of the planet's best conditions for viewing rainbows. They're such a frequent sight that a University of Hawaii ...