Asymmetry in the star's shape and surface temperature. Located approximately 500 light-years away, it is inherently unstable due to its size.
Betelgeuse Dead Light Year Impact: Understanding the Supernova Aftermath
While the event was a fascinating natural phenomenon, Betelgeuse remains very much alive, though it is in a late and volatile stage of its stellar lifecycle. Currently, none of these definitive precursors are present.
The question "is Betelgeuse dead" has captivated public imagination since the star unexpectedly dimmed in the winter of 2019. The good news for stargazers was that the star's intrinsic brightness remained largely unchanged; the dimming was purely an effect of the veil of dust blocking our view.
Betelgeuse Dead Light Year Impact: What the 2019 Dimming Event Meant for Earth
However, this final collapse could happen tomorrow, or it might not occur for another 100,000 years. When this iron core collapses under its own gravity, it will trigger a supernova explosion.
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