Catnip is the common name for a perennial herb of the mint family. The active ingredient in catnip is called nepetalactone which can trigger strange behaviors in cats. Cats don’t actually eat catnip and respond to its taste, but rather, are reacting to the smell. It can be either in a dry or fresh form.
The speed of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory nothing can travel faster than light. In miles per hour, light speed is, well, a lot: about 670,616,629 mph. If you could travel at the speed of light, you could go around the Earth 7.5 times in one second.