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Hubble sheds light on the dimming of the red super giant Betelgeuse

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Aakash Molpariya
Aakash started in Nov 2018 as a writer at Revyuh.com. Since joining, as writer, he is mainly responsible for Software, Science, programming, system administration and the Technology ecosystem, but due to his versatility he is used for everything possible. He writes about topics ranging from AI to hardware to games, stands in front of and behind the camera, creates creative product images and much more. He is a trained IT systems engineer and has studied computer science. By the way, he is enthusiastic about his own small projects in game development, hardware-handicraft, digital art, gaming and music. Email: aakash (at) revyuh (dot) com

In 2019, the unprecedented ‘blackout’ of the star Betelgeuse, in the constellation Orion, surprised the scientific community. New observations from NASA’s Hubble Space Telescope helped solve the mystery of the supergiant.

The space agency reported that the star’s dimming was likely caused by a large-scale ejection of dense, super-hot plasma that cooled and formed a huge dust cloud capable of blocking light.

This cloud, in turn, led to the darkening of a quarter of Betelgeuse’s surface, which began in late 2019 and lasted until April 2020. The study authors explained that the plasma could have been triggered by the outcrop of a large convection cell. 

“With Hubble, we see the material as it left the star’s visible surface and moved out through the atmosphere, before the dust formed that caused the star to appear to dim,” explained the study’s lead author, astrophysicist Andrea Dupree of the Harvard-Smithsonian Center for Astrophysics at Harvard University.

At the same time, the researchers stated that more studies are still needed to determine the causes of the plasma release. The authors of the investigation stressed that the star is located at an impressive distance of 725 light-years from Earth, which means that the incident would have occurred at the beginning of the 14th century.

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