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How Long Has It Been Since We Saw A Supernova?
Forbes ^
| 12/31/2019
| Kiona N. Smith
Posted on 01/04/2020 8:50:56 PM PST by BenLurkin
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To: BenLurkin
General Qasim was named a rising star on 1/2 and exploded on 1/3.
21
posted on
01/04/2020 9:23:32 PM PST
by
DannyTN
To: gundog
The electromagnetic spectrum is much more than visible light. 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.
22
posted on
01/04/2020 9:26:16 PM PST
by
doorgunner69
(Peace is that brief glorious moment in history when everybody stands around reloading - T Jefferson)
To: doorgunner69
Sure. I thought that was what I said.
23
posted on
01/04/2020 9:29:26 PM PST
by
gundog
( Hail to the Chief, bitches!)
To: headstamp 2
Purina? Wasnt he one of the little rascals?
24
posted on
01/04/2020 9:30:39 PM PST
by
Equine1952
((You can die on your feet or live down on your knees. You can not do both. Freedom Is not Free))
To: BenLurkin; GOPsterinMA; Impy; BillyBoy; LS; fieldmarshaldj
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.
25
posted on
01/04/2020 9:39:33 PM PST
by
NFHale
(The Second Amendment - By Any Means Necessary.)
To: ProtectOurFreedom
They were blasted out before the light. They travel pretty fast as well.
To: headstamp 2
Nutria. Big rat-like things in the bayou.
To: Equine1952
28
posted on
01/04/2020 9:42:01 PM PST
by
BigEdLB
(BigEdLB, Russian BOT, At your service)
To: gundog
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 implosions 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.
To: headstamp 2; Larry Lucido
Nutria. Part of the beaver family iirc.
Or maybe the Naugha family?
30
posted on
01/04/2020 9:43:23 PM PST
by
21twelve
(!)
To: Salamander
31
posted on
01/04/2020 9:43:56 PM PST
by
dfwgator
(Endut! Hoch Hech!)
To: Ozark Tom
OK. Light ...visible...would emanate from the star all along. Visual evidence of the explosion would trail the neutron pulses.
32
posted on
01/04/2020 9:51:41 PM PST
by
gundog
( Hail to the Chief, bitches!)
To: BenLurkin
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.
33
posted on
01/04/2020 9:55:23 PM PST
by
LukeL
To: dfwgator
I was blessed to be blissfully ignorant of that...until just now.
/ick
34
posted on
01/04/2020 10:00:00 PM PST
by
Salamander
(Living On The Ledge....)
To: Vermont Lt
35
posted on
01/04/2020 10:00:35 PM PST
by
Salamander
(Living On The Ledge....)
To: 21twelve
It’s horrible how many Naughas must die JUST SO YOU CAN HAVE YOUR DAMN CAR SEATS AND SOFAS!!!
36
posted on
01/04/2020 10:01:39 PM PST
by
Salamander
(Living On The Ledge....)
To: BenLurkin
To: Salamander; dfwgator
38
posted on
01/04/2020 10:12:37 PM PST
by
DoodleBob
(Gravity's waiting period is about 9.8 m/s^2)
To: Fightin Whitey
39
posted on
01/04/2020 10:13:06 PM PST
by
BenLurkin
(The above is not a statement of fact. It is either opinion or satire. Or both.)
To: BenLurkin
Ian Shelton who along with Oscar Duhalde and Albert Jones is credited with discovering SuperNova 1987A. He was the first to notice the new light and post it on what was the Central Bureau of Astronomical Telegrams
40
posted on
01/04/2020 10:14:32 PM PST
by
xp38
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