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The bright red giant star Betelgeuse will temporarily dim or even 'disappear' in the sky on 11/12 December 2023, when an asteroid passes in front of it.
The event, known as an occultation, will see Asteroid (319) Leona pass in front of Betelgeuse from our perspective on Earth, and will be visible across southern Europe, southern Florida in the USA and Mexico.
If you're based along the line of occultation on Earth, you will be able to see the temporary disappearance or dimming of Betelgeuse on 12 December.
The occultation of Betelgeuse will occur around or shortly after 01:00 UTC on 12 December 2023 for those observing in southern Europe.
It will be visible around 01:20 and 01:25 UTC in southern Florida, USA and in Mexico, respectively, equating to about 20:20 on 11 December in Florida, local time.