Great Dimming of Betelgeuse explained.

@article{Levesque2021GreatDO,
  title={Great Dimming of Betelgeuse explained.},
  author={Emily M. Levesque},
  journal={Nature},
  year={2021},
  volume={594 7863},
  pages={
          343-344
        }
}
1. Sperry, R. W. Proc. Natl Acad. Sci. USA 50, 703–710 (1963). 2. Sanes, J. R. & Zipursky, S. L. Cell 181, 536–556 (2020). 3. Pederick, D. T. et al. Science 372, 1068–1073 (2021). 4. Igarashi, K. M., Ito, H. T., Moser, E. I. & Moser, M.-B. FEBS Lett. 588, 2470–2476 (2014). 5. Berns, D. S., DeNardo, L. A., Pederick, D. T. & Luo, L. Nature 554, 328–333 (2018). 6. Del Toro, D. et al. Cell 180, 323–339e.19 (2020). 7. Sando, R., Jiang, X. & Südhof, T. C. Science 363, eaav7969 (2019). 
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A dusty veil shading Betelgeuse during its Great Dimming.
TLDR
Observations and modelling support a scenario in which a dust clump formed recently in the vicinity of the star, owing to a local temperature decrease in a cool patch that appeared on the photosphere, and suggest that a component of mass loss from red supergiants is inhomogeneous, linked to a very contrasted and rapidly changing photosphere.
The Photospheric Temperatures of Betelgeuse during the Great Dimming of 2019/2020: No New Dust Required
The processes that shape the extended atmospheres of red supergiants (RSGs), heat their chromospheres, create molecular reservoirs, drive mass loss, and create dust remain poorly understood.…
Evolutionary tracks for Betelgeuse
We have constructed a series of non-rotating quasi-hydrostatic evolutionary models for the M2 Iab supergiant Betelgeuse ($\alpha~Orionis$). Our models are constrained by multiple observed values for…
Spatially Resolved Ultraviolet Spectroscopy of the Great Dimming of Betelgeuse
The bright supergiant, Betelgeuse (Alpha Orionis, HD 39801) experienced a visual dimming during 2019 December and the first quarter of 2020 reaching an historic minimum 2020 February 7$-$13. During…
An Updated 2017 Astrometric Solution for Betelgeuse
We provide an update for the astrometric solution for the Type II supernova progenitor Betelgeuse using the revised Hipparcos Intermediate Astrometric Data (HIAD) of van Leeuwen, combined with…
Betelgeuse Just Is Not That Cool: Effective Temperature Alone Cannot Explain the Recent Dimming of Betelgeuse
We present optical spectrophotometry of the red supergiant Betelgeuse from 2020 February 15, during its recent unprecedented dimming episode. By comparing this spectrum to stellar atmosphere models…
Betelgeuse Fainter in the Submillimeter Too: An Analysis of JCMT and APEX Monitoring during the Recent Optical Minimum
Betelgeuse is the nearest Red Supergiant star and it underwent an unusually deep minimum at optical wavelengths during its most recent pulsation cycle. We present submillimetre observations taken by…
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