The Harvest Moon is set to rise this Thursday as the final supermoon of 2023, wrapping up a summer marked by big, radiant full moons. According to Space.com, this special supermoon will be joined by a parade of planets, including the largest worlds in our solar system -  Jupiter and Saturn - as well as Mercury, which is the smallest. What is a supermoon? A supermoon is a celestial phenomenon that occurs when the moon is at or near its closest approach to Earth in its orbit....