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Old 04-28-2009, 09:01 PM   #1
Asinine
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Question Ok, I just pulled a muscle in my brain. OT astrophysicists and know-it-alls, hear me!

Sooooo, we just got a glimpse of something 13 billion light years away.

http://www.msnbc.msn.com/id/30455828/

Which means this happened 13 billion years ago... 630 million years after the big bang (i.e., this thing is 95% as old as the universe itself).

Which means that it occurred at a distance from the center of the universe equal to the distance crap emitted from the big bang would have traveled in 630 million years. Which means that from our perspective, we are "seeing it" at that point in space.

But we're observing it 13 billion years later from a distance from the center of the universe equal to the distance something would travel from the big bang in 13.63 billion years.

So basically it took light 13 billion years to get from there to here. The only thing that I can think of is that we must have gotten ejected from the big bang in the opposite direction (more or less) from this thing... and it took light (yes, light) 13 billion years to catch up with us heading in the opposite direction. Which means that the universe is expanding at a rate very close to the speed of light... and that doesn't seem possible...which is where, ouch, I pulled the muscle in my brain.
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Old 04-28-2009, 09:03 PM   #2
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try drawing this out on paper.
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Old 04-28-2009, 09:05 PM   #3
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I've just gone crosseyed.
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Old 04-28-2009, 09:05 PM   #4
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Quote:
Originally Posted by burnera View Post
try drawing this out on paper.
I did, but it just made me angry
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Old 04-28-2009, 09:06 PM   #5
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or it means the universe is ****ing big.

edit: wait...I see what you're saying now.
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Old 04-28-2009, 09:08 PM   #6
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Quote:
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I did, but it just made me angry
try mspaint then
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Old 04-28-2009, 09:08 PM   #7
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Very big, very fast, and a very long time?

Grant
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Old 04-28-2009, 09:10 PM   #8
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It takes off.
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Old 04-28-2009, 09:10 PM   #9
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but we're assuming that the universe is an expanding sphere shape here, aren't we.
what if it's not?
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Old 04-28-2009, 09:11 PM   #10
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quote frpm grant: Very big, very fast, and a very long time?

that;s what she said??
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Old 04-28-2009, 09:12 PM   #11
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If you're on a train traveling at the speed of light, and you stand at the back of the train, and you shine a flashlight directly backwards, when will the train reach Vienna?
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Old 04-28-2009, 09:12 PM   #12
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In the 13 billion years it took for the light to reach us that object has moved quite a bit. Perhaps it ceased to exist 10 billion years ago, but we we will never know.
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Old 04-28-2009, 09:13 PM   #13
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see how fast that was?
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Old 04-28-2009, 09:13 PM   #14
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Quote:
Originally Posted by rogue View Post
If you're on a train traveling at the speed of light, and you stand at the back of the train, and you shine a flashlight directly backwards, when will the train reach Vienna?
Almost instantaneously
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Old 04-28-2009, 09:13 PM   #15
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more likely: perhaps the answer to many of the 'impossibles' lie in the existence and action of a Creator.

less likely: there was a treadmill involved.
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Old 04-28-2009, 09:15 PM   #16
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Quote:
Originally Posted by shemoves View Post
perhaps the answer to many of the 'impossibles' lie in the existence and action of a Creator.
You mean Asinine, the creator of this thread?
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Old 04-28-2009, 09:15 PM   #17
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Quote:
Originally Posted by shemoves View Post
more likely: perhaps the answer to many of the 'impossibles' lie in the existence and action of a Creator.

less likely: there was a treadmill involved.
Santa?
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Old 04-28-2009, 09:16 PM   #18
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more likely: perhaps the answer to many of the 'impossibles' lie in the existence and action of a Creator.

less likely: there was a treadmill involved.
Yep, anything unexplainable can be attributed to God.

I just realized why christianity took such a foothold in the dark-ages.
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Old 04-28-2009, 09:17 PM   #19
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Quote:
Originally Posted by shemoves View Post
more likely: perhaps the answer to many of the 'impossibles' lie in the existence and action of a Creator.

less likely: there was a treadmill involved.
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Old 04-28-2009, 09:18 PM   #20
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Quote:
Originally Posted by Howl View Post
You mean Asinine, the creator of this thread?
Or Nick, the creator of this board?
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Old 04-28-2009, 09:18 PM   #21
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Quote:
Originally Posted by Asinine View Post
Sooooo, we just got a glimpse of something 13 billion light years away.

http://www.msnbc.msn.com/id/30455828/

Which means this happened 13 billion years ago... 630 million years after the big bang (i.e., this thing is 95% as old as the universe itself).

Which means that it occurred at a distance from the center of the universe equal to the distance crap emitted from the big bang would have traveled in 630 million years. Which means that from our perspective, we are "seeing it" at that point in space.

But we're observing it 13 billion years later from a distance from the center of the universe equal to the distance something would travel from the big bang in 13.63 billion years.

So basically it took light 13 billion years to get from there to here. The only thing that I can think of is that we must have gotten ejected from the big bang in the opposite direction (more or less) from this thing... and it took light (yes, light) 13 billion years to catch up with us heading in the opposite direction. Which means that the universe is expanding at a rate very close to the speed of light... and that doesn't seem possible...which is where, ouch, I pulled the muscle in my brain.
Mindhurt: Every direction we look things are receding at the same pace. Remnants of the big bang are at the "outer edge" of the universe, which is in all directions. Space is kind of like the surface of an inflating balloon. Every point on it is moving away from every other point. So this doesn't necessarily need to be on the opposite side of the universe.

Mind****: It's quite possible the speed of light was very different in the early times after the big bang. This is one way of accounting for the universe's "missing mass" AKA dark matter.
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Old 04-28-2009, 09:19 PM   #22
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It's like a giant, cosmic, ping pong ball trick.
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Old 04-28-2009, 09:19 PM   #23
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Quote:
Originally Posted by shemoves View Post
more likely: perhaps the answer to many of the 'impossibles' lie in the existence and action of a Creator.

less likely: there was a treadmill involved.
That was easy to answer, eh? Sure is easy to just say that the things you don't understand were magic'd into existence by a god.

You know, up until a hundred years ago it was believed that thunder was the work of a god too.

-*
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Old 04-28-2009, 09:23 PM   #24
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currently beyond the realm of full human understanding = god did it!
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Old 04-28-2009, 09:23 PM   #25
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Quote:
Originally Posted by Chromer View Post
Mindhurt: Every direction we look things are receding at the same pace. Remnants of the big bang are at the "outer edge" of the universe, which is in all directions. Space is kind of like the surface of an inflating balloon. Every point on it is moving away from every other point. So this doesn't necessarily need to be on the opposite side of the universe.
doesn't the balloon shape assert that the universe only exists on the surface of the balloon, and not within the balloon as well?
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