Comments by "rivenoak" (@rivenoak) on "Supernova Alert: We Will Soon See an Exploding Star in the Night Sky" video.

  1.  @richardsylvanus2717  not cool :p earth will not survive the red giant state, a supernova is not possible
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  2.  @SupraSav  in such a case we would miss nightlife as soon the correct constellation is visible
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  3. we all will :( it was around for 10 million years or so, no human saw a sky without Betelgeuse.
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  4. some time of afterglow aside: the shoulder will be gone forever, no if or but. Betelgeuse is to heavy to maintain a neutron star remnant unless the SN is a process when the star sheds layers after layer and the core ends at less than 3 solar masses. everything above 3 solar masses and Betelgeuse becomes our most dear black hole to study but any SN destroys its immediate neighbourhood, that's true. the SN of 1054 gave us crab nebula and its progenitor star was not so massive as Betelgeuse.
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  5. @@mathiaskaempff uhhh, so many weird ideas .... :p first: if you are not from alpha Orionis then you know how to travel the universe which also means you know how to give Betelgeuse a wide berth second: a solid nope to life in a few days Betelgeuse system might have gobbled up some planetesimals to form protoplanets, but those molten rocks are not fit to carry life.
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  6. 650 years, no millions :)
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  7. what rocks ?
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  8. yep, the old estimate of "up to ~10.000 years" is off the table now. star is ready for its final curtain
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  9.  @user-bx7nw1ve6y  dunno where i read about, but afailk a supernova is devastating up to 50ly distance in all directions. Betelgeuse will not interfere with Bellatrix or other known parts of the constellation, but its immediate neighbourhood will suffer and if the star was busy with a very early stage of planets: pooof all gone but the outer layers after the event might evolve into a fancy nebula still.
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  10. no human being saw orion without its shoulder, but soon it will be gone. :(
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  11. naaah, the star is ~10 million years old. way to less time to develop life on any planet .
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  12. Carbon burning is the start of the final run and a "short" process; Betelgeuse will not grace the sky for another 10000 years. 1000y is the threshold now afaik
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  13. neutron star result is small, black hole even smaller
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