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When Betelgeuse goes supernova, the brightness will rival a full moon
- ringshall 7y agoNot to be a grump, but surely this doesn’t qualify as news
- rishav_sharan 7y agoHow long will the supernova last? If it were to happen, will it be over in a few hours, days or last for years?
- DrKabab 7y agoI looked it up, turns out it could be any of those depending on how big it is, how far it is, and what its peak brightness here. [1] does a good job of explaining it [1]. http://curious.astro.cornell.edu/physics/85-the-universe/supernovae/general-questions/419-how-long-does-the-supernova-stage-of-a-star-last-intermediate http://curious.astro.cornell.edu/physics/85-the-universe/sup...
- MichaelMoser123 7y agoif the mass is ten times that of the sun, wouldn't the remnants of the star collapse into a black hole once the show is over?
- ars 7y agoIn theory, although it would take an infinite amount of time to do so. From Earth it would just get redder and dimmer - when we couldn't see it anymore it wouldn't be a black hole yet, but it would be hard to see the difference. (Especially surrounded by the accretion disc.)
- Gibbon1 7y agoI think most of the mass gets ejected.