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Thursday, April 01, 2021

An unusually bright star has gone missing, in a mystery of cosmic proportions.

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An object inside the Kinman dwarf galaxy has disappeared from view, according to new research published today in Monthly Notices of the Royal Astronomical Society. This massive and exceptionally bright blue star was hypothesized to exist based on astronomical observations made between 2001 and 2011, but as of 2019, it is no longer detectable.

The authors of the study, led by PhD student Andrew Allan of Trinity College Dublin, have conjured two possible explanations: Either the star has experienced a dramatic drop in luminosity and is now partially hiding behind some dust, or it transformed into a black hole without sparking a supernova explosion. If it's the latter, it would represent just the second known failed supernova.

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June 30, 2020

Maybe it was the Covid.

#1 | Posted by LegallyYourDead at 2021-04-01 07:46 PM | Reply

PHL2938 (Kinman's Dwarf Galaxy) is 22.3 million parsecs, or 73.676 million light-years away. A parsec being ~3.26 light-years.

At that distance, perhaps the super-bright blue star actually was the supernova. To my amateur knowledge, blue stars are generally young, hot, and bright, like Sirius and are not anywhere near their evolutionary dissolution, such as the red star Betelgeuse in Orion.

#2 | Posted by madscientist at 2021-04-01 08:13 PM | Reply

And if Betelgeuse should go supernova in my lifetime it'd be the most interesting heavenly phenomenon I've witnessed. Aside from exactly three memorable aurora that made it down to Texas in the last 50 years. And the total eclipse a few years ago.

#3 | Posted by madscientist at 2021-04-02 01:32 AM | Reply

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