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In October 2019, the star Betelgeuse began dimming rapidly. Even though Betelgeuse is a well-known variable star, the Great Dimming was an unprecedented event. By February 2020, the red supergiant lost more than two-thirds its normal brightness. It got so faint it was easily noticeable to the unaided eye. Then, Betelgeuse recovered, returning to its normal brightness before disappearing from the night sky in late April. Now, new results from the Hubble Space Telescope suggest that Betelgeuse may have ejected a massive cloud of dust that obscured its view. Meanwhile, NASAs STEREO spacecraft imaged Betelgeuse over the summer of 2020, when it wasnt observable from Earth. It turns out, Betelgeuse was dimming again. Welcome back to Launch Pad, Im Christian Ready, your friendly neighborhood astronomer. Theres been quite a lot work done over the last few months to understand what caused the Great Dimmingamp;quot; of Betelgeuse last winter. Betelgeuse is a red supergiant star thatamp;#3
