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Supernova Outbreak: X rays signal earliest alert
Science News ^
| Week of March 8, 2008
| Ron Cowen
Posted on 03/09/2008 11:11:33 PM PDT by neverdem
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BANG. Astronomers serendipitously found the supernova SN 2008d, located in the galaxy NGC 2770, through X-ray observations (labeled as XRF080109). This observation marks the first finding of signs of a stellar explosion emitted so soon after a star's demise. The two other supernovas labeled here were found in this galaxy last year and in 1999.
A. de Ugarte Postigo/ESO et al, Dark Cosmology Centre/Univ. of Copenhagen, Instituto de Astrofísica de Andalucía (CSIC), and Univ. of Hertfordshire
1
posted on
03/09/2008 11:11:36 PM PDT
by
neverdem
To: neverdem
...sunscreen, PF 45, anyone? ...umbrella(s)?
2
posted on
03/09/2008 11:16:45 PM PDT
by
skinkinthegrass
(just b/c your paranoid, doesn't mean "they" aren't out to get you...our hopes were dashed by CINOs :)
To: neverdem
The thought of gamma ray bursts scares me.
3
posted on
03/09/2008 11:18:37 PM PDT
by
wastedyears
(Iron Maiden in two weeks' time.)
To: neverdem
Are they sure it wasn’t due to the “Hillary Effect” because of the Wyoming results?
To: wastedyears
I thought of a gamma ray burst too. Such bursts if strong enough from a nearby star, would destroy the earth's protective ozone layer. Without the ozone layer, the Sun's harmful ultraviolet radiation would kill life on the surface and the surface of water. Life as we know it would either cease to exist, or suffer radical chromosomal damage.
If Al Gore and his band of Chicken Littles really wanted to protect life on this planet, they should work on a ozone layer recovery process.
5
posted on
03/09/2008 11:41:06 PM PDT
by
jonrick46
To: El Gato; Ernest_at_the_Beach; Robert A. Cook, PE; lepton; LadyDoc; jb6; tiamat; PGalt; Dianna; ...
6
posted on
03/09/2008 11:44:54 PM PDT
by
neverdem
To: neverdem
Yeah.....I thought it was getting warmer just didn’t know why.
7
posted on
03/09/2008 11:50:17 PM PDT
by
BIGLOOK
(Keelhaul politicians. The Ship of State needs a good scrubbing!)
To: neverdem
8
posted on
03/09/2008 11:57:30 PM PDT
by
zencycler
To: neverdem
AHA! Maybe now THEY will believe me!
9
posted on
03/09/2008 11:59:37 PM PDT
by
Ken H
10
posted on
03/10/2008 12:05:14 AM PDT
by
SunkenCiv
(https://secure.freerepublic.com/donate/______________________Profile updated Saturday, March 1, 2008)
To: 75thOVI; AFPhys; aimhigh; Alice in Wonderland; AndrewC; aristotleman; Avoiding_Sulla; BenLurkin; ...
11
posted on
03/10/2008 12:05:56 AM PDT
by
SunkenCiv
(https://secure.freerepublic.com/donate/______________________Profile updated Saturday, March 1, 2008)
To: neverdem
...using wide-angle X-ray telescopes could routinely witness the very beginnings of hundreds of supernova explosions each year... Wow, fantastic! Just when you think astronomers will never have an opportunity to observe a supernova from the moment it blows, unless they get luckier than the luckiest lottery player who ever lived, along comes a serendipitous find that says that they're probably going to be able to observe hundreds of them each year from a few moments before they blow, right on through all the fireworks. Too amazing. Bound to lead to a much, much richer understanding of the inner workings of stars!
To: skinkinthegrass
Located a mere 90 million light-years away
I think you can go with SPF 10 and ditch the umbrella for awhile;-)
13
posted on
03/10/2008 12:45:49 AM PDT
by
Sarajevo
(You're just jealous because the voices only talk to me.)
To: SunkenCiv
14
posted on
03/10/2008 1:11:50 AM PDT
by
SatinDoll
(Desperately seeking a conservative candidate.)
To: jonrick46
It has already happened here, during the last 41,ooo years. Try reading The Cycle of Cosmic Catastrophes.
Talk about sleepless nights...
15
posted on
03/10/2008 1:13:46 AM PDT
by
SatinDoll
(Desperately seeking a conservative candidate.)
To: SatinDoll
There was a documentary put out by the Science Channel, I believe it was called,
The History of the Earth that spoke about such an event. It also was the first time I saw information about the "Snow ball Earth," which describe the Earth with the oceans frozen to 1/2 mile deep within 30 degrees of the equator, and layer of ice over most of its land surface. This was due to insufficient CO2 in the atmosphere. I would rather have too much CO2 than a spiraling cycle that took the Earth to a refrigerative state.
These two scenarios, one of a lethal Gama ray burst, and the other, with a lack of CO2 to offset the sun in a cooling cycle, are doomsday scenarios. In one way we get microwaved. In another, we get frozen. The Chicken Littles would love that. TV dinners anyone?
To: jonrick46
If Al Gore and his band of Chicken Littles really wanted to protect life on this planet, they should work on a ozone layer recovery process.So many different things could go wrong--asteroids the most likely. The only real protection is to develop a space program that sets up self sustaining human colonies on other planets and, long term, outside the solar system. If the human race spreads out enough, extinction events are much less likely.
Of course, Al and his buds regard humans as a cancer on the Earth. The last thing they want is to have us ruin the rest of the Galaxy also.
To: Sarajevo
..and ditch the umbrella for awhile...
but, but....90 million l.y., is so close (a million here, million there :)....and its such a pretty golf umbrella.
18
posted on
03/10/2008 7:21:33 AM PDT
by
skinkinthegrass
(just b/c your paranoid, doesn't mean "they" aren't out to get you...our hopes were dashed by CINOs :)
To: ModelBreaker
...they should work on a ozone layer recovery process...or construct a Dyson Sphere....
19
posted on
03/10/2008 7:25:08 AM PDT
by
skinkinthegrass
(just b/c your paranoid, doesn't mean "they" aren't out to get you...our hopes were dashed by CINOs :)
To: neverdem
I thought X-rays and visibile light both traveled at the same speed. Why would the X-rays arrive first?
20
posted on
03/10/2008 7:36:52 AM PDT
by
scan59
(Let consumers dictate market policies. Government just gets in the way.)
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