A comet’s path and motion is dictated by gravity from the planets and stars they pass. Therefore when a comet is in our solar system, most of the gravity affecting its motion is due to the sun and as it gets closer to the sun the faster it moves (because the closer an object is to the sun the stronger the sun’s gravity is on it). As well as moving faster, a comet’s tail grows because more of its ice evaporates. As of early 2016, there are more than 5,260 known comets, a number that is steadily increasing. However, only a few have made a huge impact on our skies. Are you ready to learn about these fascinating comets? Then check out these 25 Most Impressive Comets Ever Seen. Comets are not the only astronomical objects you should look out for, check out these 25 Strangest Things Found In Outer Space.