Science is one way we make sense of the world around us. Some might even say it’s the most rational way to figure out how things work in an otherwise inscrutable universe. But even science doesn’t have all the answers all the time. While researchers dedicate themselves to coming up with explanations, the rest of us get the chance to conjecture wildly and come up with our own likely false, yet largely fun hypotheses. Here are phenomena that have science stumped at the moment. 1. Immediately after the Kuiper belt beyond Neptune, there’s a sudden unexpected drop in the density of icy rocks. Scientists think it might be a mystery 9th planet that caused the density of rocks in this region to fall so suddenly, but they haven’t been able to find it. Image Source: theplanets.org The Kuiper Belt is a disc of icy rocks beyond the eight planets in our solar system. According to theoretical models, the density of the icy rocks beyond 50 astronomical units should increase. Bu...