Who Turned off the Lights on Betelgeuse? (ESOcast 238 Light)

When Betelgeuse, a bright orange star in the constellation of Orion, became visibly darker in late 2019 and early 2020, the astronomy community was puzzled. A team of astronomers have now published new research done with ESO's Very Large Telescope and Very Large Telescope interferometer that solves the mystery of Betelgeuse's dimming. This ESOcast Light summarises the discovery.

The ESOcast Light is a series of short videos bringing you the wonders of the Universe in bite-sized pieces. The video is available in 4K UHD.

Credit:
ESO

Directed by: Herbert Zodet and Martin Wallner.
Editing: Herbert Zodet.
Web and technical support: Gurvan Bazin and Raquel Yumi Shida.
Written by: Thea Elvin, Anna Purdue, Giulio Mazzolo and Bárbara Ferreira.
Music: Stellardrone — Fermi Paradox and Rendezvous With Rama.
Footage and photos: ESO, P. Kervella, M. Montargès et al., L. Calçada, Digitized Sky Survey 2. Acknowledgement: E. Pantin, N. Risinger (skysurvey.org) and P. Horálek.
Scientific consultants: Paola Amico and Mariya Lyubenova.

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