You certainly do not have to be a physicist to know of gravity. Gravity is not some obscure concept mentioned only in the lingo of die-hard astronomy fans, like a “quasar" or a "red giant." Gravity is a concept known by toddlers and astrophysicists alike. From a young age, we learn that when we throw a ball up, it must come back down. We learn that if we slip on the monkey bars, gravity will bring us hurtling toward the ground. And sadly, we learn that we cannot fly. These lessons are all thanks to gravity. But while anyone and everyone recognizes that gravity exists, it is likely that far fewer people have pondered where gravity comes from. Few have likely asked themselves, “what really IS gravity?" That is where physicists come into play, and the answer is not quite as simple as the concept itself.