Posted on 01/04/2020 8:50:56 PM PST by BenLurkin
Betelgeuse has gotten dramatically dimmer over the last few weeks, astronomers say the change probably isn’t a symptom of an impending stellar explosion.
That’s good news for any planets in the star’s orbit... But it’s disappointing news for Earth-based astronomers and stargazers, who haven’t been able to watch the death of a star with their unaided eyes since 1987, and may not have another chance for centuries.
In 1987, a supernova called SN 1987A, marked the death of a blue giant star in the Large Magellanic Cloud, one of the dwarf galaxies that orbits the Milky Way. 168,000 years after the star ran out of fuel and collapsed in on itself, the light of the resulting explosion reached Earth’s southern hemisphere – preceded a few hours earlier by a series of neutrino bursts.
(Excerpt) Read more at forbes.com ...
General Qasim was named a rising star on 1/2 and exploded on 1/3.
Yabbut, in the same medium, vaccum in this case, it all propagates at the same velocity. I would guess precursor events released the neutrinos first.
Sure. I thought that was what I said.
Purina? Wasn’t he one of the little rascals?
About four hours ago.
The corned beef and cabbage didn’t sit too well.
The blast lifted me about three inches off the toilet seat, notgonnalietoya...
Thought the house was gonna blow.
They were blasted out before the light. They travel pretty fast as well.
Nutria. Big rat-like things in the bayou.
Cat food
Above a critical temperature threshold within a star, energy is diverted to production of neutrinos from the photons. The majority of neutrinos are not prevented from escaping with that energy. The photons (light energy) which support the stars bulk against gravity are now missing.
In a fraction of a second the core implosion’s shock compression results in conditions which covert some matter into elements more dense than iron, a pure neutron inner core which often continues to a black hole state, and energy release sufficient to explode the outer core layer away to free space. Light from this core explosion process is delayed in travel by the amount of time required for the debris to thin, such that the light trapped inside the cloud can escape.
Nutria. Part of the beaver family iirc.
Or maybe the Naugha family?
OK. Light ...visible...would emanate from the star all along. Visual evidence of the explosion would trail the neutron pulses.
Stars that go Super Nova often fluctuate in size and luminosity in he period before they “explode”. This time period is hundreds of thousands of years or more so don’t plan on anything. Though I am sure Vegas would take bets if they knew they could make money on it.
I was blessed to be blissfully ignorant of that...until just now.
/ick
Literal LOL
It’s horrible how many Naughas must die JUST SO YOU CAN HAVE YOUR DAMN CAR SEATS AND SOFAS!!!
Nice
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