Rainbows are one of the most beautiful natural phenomena there is. Most of us are familiar with how rainbows form—we know to look for them after a rain when the sun peeks through the clouds. But what most people don't know is that there is more than one kind of rainbow.

Rainbows are formed when light from the sun is scattered by water droplets (e.g. raindrops or fog) through a process called refraction. Refraction occurs when the light from the sun changes direction when passing through a medium denser than air, such as a raindrop.

There are 12 different kinds of single arc rainbows that are decided based on the colors, strength of the bands, and supernumerary bows that appear, or don't appear, in the arc.

The rainbow will always represent joy and happiness. But today, it means something more. Now, the rainbow flag is a symbol of hope and inclusion in the LGBTQ community that's so ubiquitous it's hard to imagine a Pride celebration without vivid banners flying overhead and outfits made from every color in the rainbow.