submitted 1 year ago by SnotBubble@lemmy.ml to c/asklemmy@lemmy.ml

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While camping, I noticed that if you look long enough at almost any star, you start seeing some tiny, subtle colors in that star. Even crazier, they sometimes flicker between more colors. In my case orange, blue and something like cyan.

Besides constellations, what else could you observe regarding starts, with the naked eye?

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[-] shinigamiookamiryuu@lemm.ee 9 points 1 year ago

Betelgeuse will be going supernova in the next few decades and I've been looking at the light fluctuations.

[-] SMT42@lemmy.world 6 points 1 year ago

In reality, it's probably already happened! And the light just hasn't reached us yet
Pretty insane to think about that

[-] Pantherina@feddit.de 1 points 1 year ago* (last edited 1 year ago)

550 Lj, but its only expected in 1,5mio Years

[15] R Neuhäuser, G Torres, M Mugrauer, D L Neuhäuser, J Chapman, D Luge, M Cosci: Colour evolution of Betelgeuse and Antares over two millennia, derived from historical records, as a new constraint on mass and age. In: Monthly Notices of the Royal Astronomical Society. Band 516, Nr. 1, 5. September 2022, ISSN 0035-8711, S. 693–719, doi:10.1093/mnras/stac1969

[-] SMT42@lemmy.world 1 points 1 year ago

1.5 million?
100,000 years is the much more commonly reported number.

Still though, should interpret my "probably" as more of a "maybe", haha

[-] shinigamiookamiryuu@lemm.ee 1 points 1 year ago* (last edited 1 year ago)

Will we get any of the radiation? Does anyone know this?

[-] ryathal@sh.itjust.works 3 points 1 year ago

Probably not, but at most it would be detectable levels. Radiation drops at the square of distance, and there is a lot of distance.

this post was submitted on 27 Sep 2023

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