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By Katie Hunt, CNN Betelgeuse, a bright star visible in the Orion constellation in the night sky, has beguiled and puzzled space scientists since late 2019. a supernova something that was last observed in the 17th century. However, scientists now believe these dimming events occurred because of dust clouds. New images of the star’s surface clearly show how its brightness changed, helping astronomers fully understand what caused what they describe as a “great dimming.” “For once, we were seeing the appearance of a star changing in real time on a scale of weeks,” said Miguel Montargès, a postdoctoral research fellow at the Observatoire de Paris, France, and the Institute of Astronomy

Region flamandeÎe de franceAndrea dupreeMiguel montargHarvard smithsonianInstitute of astronomyInstitute of astronomyat ku leuvenKatie huntObservatoire de parisEuropean southern observatoryVery large telescopein chileEmily cannonHubble spaceஆண்ட்ரியா டூப்ரீஹார்வர்ட் ஸ்மித்சோனியன்நிறுவனம் ஆஃப் வானியல்