Massive Flare Seen Close to Our Solar System: What It Means for Chances of Alien Neighbors 2,887 The sun isn’t the only star to produce stellar flares. On April 21, 2021, a team of astronomers published new research describing the brightest flare ever measured from Proxima Centauri in ultraviolet light. To learn about this extraordinary event, and what it might mean for any life on the planets orbiting Earth’s closest neighboring star, The Conversation spoke with Parke Loyd, an astrophysicist at Arizona State University and co-author of the paper. Excerpts from the conversation are below and have been edited for length and clarity.