Something called a “supermoon” rose at night on October 15 and 16. That is when the moon is full, closer to Earth than usual, and lit by the sun. NASA made a video explaining why the moon is sometimes closer to Earth than other times in its orbit. The moon’s orbit around Earth is not a perfect circle. It is shaped like an oval. The moon is about 48,000 kilometers closer to Earth on one side of its orbit than the other. A supermoon happens when the Earth is between the sun and the closer-than-usual moon. The sun lights up the moon during the Earth’s nighttime, and since it is closer than usual, it looks very large and bright. Last weekend’s supermoon was the first of three supermoons of 2016. The next supermoons will take place on November 14 and December 14. The November supermoon will be “extra super.” In fact, it will be the closest full moon of the 21stcentury, so far.