Stargazers can see the final supermoon of the year this weekend
NPRStargazers can see the final supermoon of the year this weekend toggle caption Yasser Al-Zayyat/Getty Images Skygazers across the U.S. on Friday will have one last chance to catch a glimpse of a supermoon before the year ends. The moon is considered "super" when it is full and its orbit is at the closest point to Earth, according to NASA — though the term "supermoon" is not official. November's supermoon will appear full for nearly three days starting Thursday morning through sunrise Sunday morning, NASA says. "I am definitely in favor of having everyone observe the moon, and when it does appear at its largest when it is full, that is the easiest time to observe it," Palma says, adding that people should use a moon map to identify features on the lunar surface.