Is Betelgeuse Already a Supernova?

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Discussion Overview

The discussion centers around the status of Betelgeuse and whether it has already undergone a supernova event or is on the verge of doing so. Participants explore the implications of its recent behavior, including its size changes and distance from Earth.

Discussion Character

  • Exploratory, Debate/contested

Main Points Raised

  • One participant notes that Betelgeuse is shrinking and may be about to go supernova, suggesting it could be a type II supernova.
  • Another participant humorously emphasizes the potential for an explosive event with a playful chant.
  • A different participant asserts that Betelgeuse is on the verge of a core collapse supernova, indicating that cycles of shrinking and expanding may continue for years.
  • Another comment raises the possibility that Betelgeuse could have already exploded years ago, but the light from that event has not yet reached Earth.

Areas of Agreement / Disagreement

Participants express various viewpoints regarding the timing and nature of Betelgeuse's potential supernova, indicating that multiple competing views remain without a clear consensus.

Contextual Notes

Some statements rely on assumptions about the behavior of Betelgeuse and the limitations of observational capabilities regarding distant astronomical events.

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Betelgeuse! Betelgeuse! Betel-- BOOM!
 
Betelgeuse is definitely on the virge of going nova [core collapse]. The shrinking thing is a clue. Shrink and expansion cycles will likely occur for many more years before it gives up the ghost.
 
So technically, it could have exploded many years ago. We just can't notice it yet. I find that quite thought provoking.
 

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