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Old 03-23-2008, 10:30 PM   #1
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Default Halfway across the universe?

http://www.cnn.com/2008/TECH/space/0....ap/index.html

Apparently scientists know exactly how big the universe is now.
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Old 03-24-2008, 12:34 AM   #2
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Well its about time!
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Old 03-24-2008, 12:55 AM   #3
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Aren't gama-rays the horribly intense radiation beams that will melt everything?

I think I saw something about it on the History Channel's The Universe show.
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Old 03-24-2008, 06:56 AM   #4
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Originally Posted by 2JSC View Post
Aren't gama-rays the horribly intense radiation beams that will melt everything?

I think I saw something about it on the History Channel's The Universe show.
isn't that the radiation that turned whats his name into the hulk?


thats pretty cool, would have liked to have seen it

Last edited by hairyguy4; 03-24-2008 at 10:02 AM. Reason: better gramar
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Old 03-24-2008, 08:19 AM   #5
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OK, so by my calculations, which could be wrong, the blast was 442,500,000,000,000,000,000,000 miles away.

Can anybody say roadtrip?
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Old 03-24-2008, 12:17 PM   #6
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Aren't gama-rays the horribly intense radiation beams that will melt everything?
Gamma rays consist of high energy radiation (similar to x-rays) but produced by decay of radioactive materials (like the Uranium in a star). Gamma rays are used to treat cancer and don't melt everything.
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Old 03-24-2008, 02:57 PM   #7
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Gamma rays consist of high energy radiation (similar to x-rays) but produced by decay of radioactive materials (like the Uranium in a star). Gamma rays are used to treat cancer and don't melt everything.
Gamma-Ray Burst = Mass Extinction

If close enough, it will cook us.
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Old 03-24-2008, 05:37 PM   #8
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I love how arrogant we as humans can be
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Old 03-24-2008, 07:09 PM   #9
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If close enough, it will cook us.
That has nothing to do with the type of radiation....just the quantity and how it relates to temperature. Since most stars are at quite a distance from our planet and radiation is emitted isotropically and is inversely related to the square of the distance from the source, our risk should be low.

BTW, the radiation below your feet and in your body is imparting energy to you right now, but not enough to "cook" you.

Last edited by JeremyH; 03-24-2008 at 07:13 PM.
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Old 03-24-2008, 07:37 PM   #10
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That has nothing to do with the type of radiation....just the quantity and how it relates to temperature. Since most stars are at quite a distance from our planet and radiation is emitted isotropically and is inversely related to the square of the distance from the source, our risk should be low.

BTW, the radiation below your feet and in your body is imparting energy to you right now, but not enough to "cook" you.
Damn, either you copied all that or I need to respect you more for your mind...........
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Old 03-25-2008, 05:11 AM   #11
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That means it exploded along time ago. Dont know the exact calculations but do you guys realize how long it takes for the light just to get here from that far away? Its nuts.
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Old 03-25-2008, 06:32 AM   #12
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Damn, either you copied all that or I need to respect you more for your mind...........
I work as a Radiation Physicist in different cancer treatment centers. I might not know everything about toy trucks, but, in regard to this topic, I have quite a bit of experience.

BTW, I also used to teach college astronomy.
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Old 03-26-2008, 02:16 AM   #13
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I think it's time they turned the telescope the other direction to see what's ahead of us rather than worrying about the past. If we / this universe is still expanding from the big bang? Makes since that things we are doing now are already in the past and we are all living in a present that is also the past. I mean if they were to send a rocket in the other direction fron the past they are looking at, it would make sense that that rocket would be traveling into the cosmic future, which we have not gotten to yet and never will. No one ever said we were on the outer most part or even close to the big bang. So travel into the future could be possible???? But who cares our time is short here anyway. Really short according the the numbers they are counting by the universe would be about 15 bilion light years long and growing each second. I'm not sure of the rate of growth but it makes since it's still growing.

Last edited by JIA's Dad; 03-26-2008 at 02:21 AM.
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Old 03-26-2008, 06:56 AM   #14
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I'm not sure of the rate of growth but it makes since it's still growing.
Look into the "Raisin Cake" model of expansion. You'll see that the universe is expanding at a faster rate toward the edges faster than at the center.
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Old 03-27-2008, 08:36 PM   #15
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Originally Posted by JasonInAugusta View Post
http://www.cnn.com/2008/TECH/space/0....ap/index.html

Apparently scientists know exactly how big the universe is now.
On the NASA website, they say "halfway across the visible universe".... Leave it to CNN to screw it up
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Old 03-27-2008, 09:35 PM   #16
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Yeup.




...and to think that I'd planned to make a pit stop at the star I had dubbed "Midway" on my journey.
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Old 03-27-2008, 09:50 PM   #17
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Originally Posted by JIA's Dad View Post
I think it's time they turned the telescope the other direction to see what's ahead of us rather than worrying about the past. I mean if they were to send a rocket in the other direction from the past they are looking at, it would make sense that that rocket would be traveling into the cosmic future, which we have not gotten to yet and never will. I'm not sure of the rate of growth but it makes since it's still growing.
Time travel can only be achieved with the use of a Flux Capacitor. Come on, get with the program. It's already been done.
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Old 03-28-2008, 01:19 AM   #18
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Originally Posted by Kamikaze View Post
Damn, either you copied all that or I need to respect you more for your mind...........


Ya me too! you said shit like isotropically and is inversely related to the square Im lost if it doesnt have gears and make's lots of noise J/k Gamma whaaaaat
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Old 03-28-2008, 01:22 AM   #19
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Quote:
Originally Posted by JIA's Dad View Post
I think it's time they turned the telescope the other direction to see what's ahead of us rather than worrying about the past. If we / this universe is still expanding from the big bang? Makes since that things we are doing now are already in the past and we are all living in a present that is also the past. I mean if they were to send a rocket in the other direction fron the past they are looking at, it would make sense that that rocket would be traveling into the cosmic future, which we have not gotten to yet and never will. No one ever said we were on the outer most part or even close to the big bang. So travel into the future could be possible???? But who cares our time is short here anyway. Really short according the the numbers they are counting by the universe would be about 15 bilion light years long and growing each second. I'm not sure of the rate of growth but it makes since it's still growing.

:-( sooooo what your sayin is.......................we are screwed
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Old 03-28-2008, 10:09 AM   #20
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Originally Posted by hairyguy4 View Post
isn't that the radiation that turned whats his name into the hulk?
no, no, no....

it was steriods!!!

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