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Brightest Galactic Flash Ever Detected Hits Earth
Space.Com ^
| 18 February, 2005
| Robert Roy Britt
Posted on 02/18/2005 6:11:56 PM PST by Servant of the 9
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To: e_engineer
The ozone layer is caused by UV (sunlight) disassociating oxygen molecules in the upper atmosphere.
It's much less fragile than the media represents, too, I suspect.
61
posted on
02/18/2005 9:19:04 PM PST
by
clyde asbury
(Genesis ch. 1 v. 32)
To: DannyTN
"Does this mean all our neighbors on the other side of the galaxy were wiped out?"Neelix has gone to the Great Forest.
62
posted on
02/18/2005 9:21:05 PM PST
by
WestVirginiaRebel
("Senator, we can have this discussion in any way that you would like.")
To: Servant of the 9
From the article:
The flare on SGR 1806-20 unleashed about 10,000 trillion trillion trillion watts of power.
and I thought "billions and billions" was a lot.
Carl Seagan would be proud:
63
posted on
02/18/2005 9:23:11 PM PST
by
ChadGore
(VISUALIZE 62,041,268 Bush fans.)
To: clyde asbury
Thanks for your response.
I have ongoing repartee's with two professionals (and I am sure I know who you are talking about).
I miss one poster, who was very experienced in these areas. I haven't heard from him in a long time. He was a well known, published, top scientist for NASA. I hope he is ok.
But there are always unknowns out there, like this flash.
Exactly.
64
posted on
02/18/2005 9:46:14 PM PST
by
UCANSEE2
(DEM MOTTO: If we can't run this country, we will run it into the ground.)
To: clyde asbury; UCANSEE2
There are two problems when forming a neutron star -- you have to get something with roughly the mass of a few suns, and you have to compact it into a 10-mile or so radius. The only way to support the mass at that size is via neutron pressure. Electron degeneracy won't do it (hence the collapse from white dwarf to neutron star).
Current thinking is that the core is iron/nickel, with a few other radioactive decaying things in there to generate heat (along with the gravitational "squishing").
65
posted on
02/18/2005 9:48:24 PM PST
by
MikeD
(Columnated ruins domino...)
To: El Gato
Thanks for the information.
Rather a large ball of nickle-iron.
At least, in theory.
66
posted on
02/18/2005 9:49:02 PM PST
by
UCANSEE2
(DEM MOTTO: If we can't run this country, we will run it into the ground.)
To: e_engineer
Your not supposed to tell the public that ozone is regenerative.
67
posted on
02/18/2005 9:51:04 PM PST
by
UCANSEE2
(DEM MOTTO: If we can't run this country, we will run it into the ground.)
To: MikeD
Let me clarify. Everyone seems to miss part of my original qoute.
A neutron star is the remnant of a star that was once several times more massive than the Sun. When their nuclear fuel is depleted, they explode as a supernova. The remaining dense core is slightly more massive than the Sun but has a diameter typically no more than 12 miles (20 kilometers).
The remaining dense core is what I was referring to.
Also it seems that that core would be more DENSE than the sun, not more MASSIVE. IIRC, MASS is a factor of DENSITY and SIZE, or am I losing it?
68
posted on
02/18/2005 9:57:29 PM PST
by
UCANSEE2
(DEM MOTTO: If we can't run this country, we will run it into the ground.)
To: kayak
69
posted on
02/19/2005 4:45:51 AM PST
by
Molly Pitcher
(We are Americans...the sons and daughters of liberty...*.from FReeper the Real fifi*)
To: MikeD
Current thinking is that the core is iron/nickel, with a few other radioactive decaying things in there to generate heat (along with the gravitational "squishing").
Thanks for the refresher. I remembered the composition was of heavy metals but couldn't recall the exact elements.
What I did remember, but didn't post, is that these stars have the same density as atomic nuclei.
70
posted on
02/19/2005 4:56:35 AM PST
by
clyde asbury
(Genesis ch. 1 v. 32)
To: UCANSEE2
Also it seems that that core would be more DENSE than the sun, not more MASSIVE. IIRC, MASS is a factor of DENSITY and SIZE, or am I losing it? It MUST be close to the mass of the sun, and it MUST be much, much more dense than the sun. The minimum mass for a neutron star is in the range of 0.88 to 1.28 solar masses. If the mass was less, it would not have enough gravity to overcome the electron degeneracy pressure to become a neutron star.
If the earth's core contained a neutron star, our tallest mountains would be a few inches tall at most, and we would be crushed to death by the gravitational pressure. The earth 's diameter would be compressed down to the surface of the internal neutron star. The atmosphere would only be a few inches thick, and the sun and earth would both orbit a common center of mass located half way between them.
The orbits of Mercury, Venus, and Mars would be impossible at their current distances from the sun. I have not done the calculations, but I think the moon would suffer tidal disruption (it would become a disk) at its current distance.
Things would be very different. Women and minorities would be hit hardest.
To: UCANSEE2
..MASS is a factor of DENSITY and SIZE, or am I losing it?
Mass is a factor of itself. It's either there or it isn't.
There is neither density nor size to something which isn't there.
The remaining dense core is slightly more massive than the Sun but has a diameter typically no more than 12 miles (20 kilometers).
72
posted on
02/19/2005 5:26:19 AM PST
by
clyde asbury
(Genesis ch. 1 v. 32)
To: UCANSEE2
The core you postulate would still have the same gravity as the sun, since gravity is related to mass. We'd be squashed flat!
To: Liberal Classic
Pierson's Puppeteers have already gotten the hell out of Dodge. Nah, I'm guessing the Ringworld collapsed.
74
posted on
02/19/2005 11:11:44 PM PST
by
Heatseeker
("I sort of like liberals now. They’re kind of cute when they’re shivering and afraid." - Ann Coulter)
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