Rainbows are fascinating. After a rainfall, you might spot a colorful arch, but did you know they were actually full circles?

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Yep, that’s right. We only see half of it, because the ground interferes.

According to NASA, the ground has fewer raindrops, which makes it more difficult to see the bottom half. If you want to see the entire wonder, take a peak from at it from the sky.

Want to know more? Check out the Business Insider video below for the breakdown.