For the first time in more than 30 years, you can witness a supermoon in combination with a lunar eclipse. Late on Sept. 27, 2015, in the U.S. and much of the world, a total lunar eclipse will mask the moon’s larger-than-life face.

Watch NASA’s live stream from 8:00 p.m. until at least 11:30 p.m. EDT broadcast from Marshall Space Flight Center in Huntsville, Ala., with a live feed from the Griffith Observatory, Los Angeles, Calif. Mitzi Adams, a NASA solar physicist at Marshall will discuss the eclipse and answer questions from Twitter. To ask a question, use #askNASA.