Astronomers around the world were startled in late 2019 when Betelgeuse, one of the brightest stars in the sky, grew dark for several months. Rumors swirled that the star was about to go supernova. It didn’t. But debate over what was going on exploded. Now, newly released images taken before and during the “Great Dimming” suggest what happened: The star’s surface cooled and triggered a cloud of dust that temporarily blocked its light.
“This is the best interpretation we can get with the data that we have … without flying our spaceship to Betelgeuse and seeing what’s going on there,” says astrophysicist Emily Cannon of KU Leuven in Belgium.
→ Continue reading at Science News