|
|
|
gezzam
SFN Regular
Australia
751 Posts |
 Posted - 03/09/2004 : 15:04:05
|
http://www.nasa.gov/images/content/56533main_MM_image_feature_142_jwfull.jpg
A picture of the universe 700 million years after the big bang. This telescope never ceases to amaze.....
I just hope they decide to keep repairing it...
Form the article :
quote:
Called the Hubble Ultra Deep Field, the view represents the deepest portrait of the visible universe ever achieved by humankind. The snapshot reveals the first galaxies to emerge from the so-called "dark ages," the time shortly after the big bang when the first stars reheated the cold, dark universe. The new image should offer new insights into what types of objects reheated the universe long ago.
|
Mistakes are a part of being human. Appreciate your mistakes for what they are: precious life lessons that can only be learned the hard way. Unless it's a fatal mistake, which, at least, others can learn from.
Al Franken |
|
|
Dave W.
Info Junkie
USA
26022 Posts |
Posted - 03/09/2004 : 18:53:46 [Permalink]
|
Gezza wrote:quote:
A picture of the universe 700 million years after the big bang.
Well, I would assume that the little blue and/or white specks are the parts that are that old. The big orange ones must be closer (older) than that. Actually, I suppose all the big ones are much closer.
Well, no matter what, the image itself is too freaking cool. It's awe-inspiring, to say the least. |
- Dave W. (Private Msg, EMail)
Evidently, I rock!
Why not question something for a change?
Visit Dave's Psoriasis Info, too. |
 |
|
|
Trish
SFN Addict
USA
2102 Posts |
Posted - 03/10/2004 : 01:32:29 [Permalink]
|
You know, we keep finding older objects, just how far back in time are we going to get to look before we don't find anything else? I keep asking myself that question everytime I hear we're looking at the oldest objects in this or that pic. How many of those objects still exist in reality? All the questions and what fun it must be to answer them. Ok, I'll go crawl back under my rock now, and contemplate how to get the binoculars out from the back of the shed without breaking my neck so I can see Venus as a cresent.
|
...no one has ever found a 4.5 billion year old stone artifact (at the right geological stratum) with the words "Made by God."
No Sense of Obligation by Matt Young
"Say what you will about the sweet miracle of unquestioning faith. I consider the capacity for it terrifying and vile!"
Mother Night by Kurt Vonnegut, Jr.
They (Women Marines) don't have a nickname, and they don't need one. They get their basic training in a Marine atmosphere, at a Marine Post. They inherit the traditions of the Marines. They are Marines.
LtGen Thomas Holcomb, USMC
Commandant of the Marine Corps, 1943
|
|
|
|
Terryt88
Skeptic Friend
USA
120 Posts |
Posted - 03/10/2004 : 09:19:08 [Permalink]
|
Thanks gezzam, I needed a new Windows background.  |
|
|
|
Dave W.
Info Junkie
USA
26022 Posts |
Posted - 03/10/2004 : 11:33:39 [Permalink]
|
Trish wrote:quote:
You know, we keep finding older objects, just how far back in time are we going to get to look before we don't find anything else?
If the oldest objects in that photo were at about 700 million yeas after the Big Bang, we can only look about 699,700,000 years farther out. The theory goes, up until about 300,000 years after the Big Bang, the universe was opaque. The Cosmic Microwave Background (the light we can see coming at us more-or-less uniformly all over the sky) is made up of photons whose last interaction with matter occured just before the universe became transparent.quote:
I keep asking myself that question everytime I hear we're looking at the oldest objects in this or that pic. How many of those objects still exist in reality?
Perhaps some. No matter what, though, they definitely don't look like that anymore. |
- Dave W. (Private Msg, EMail)
Evidently, I rock!
Why not question something for a change?
Visit Dave's Psoriasis Info, too. |
|
|
|
NubiWan
Skeptic Friend
USA
424 Posts |
Posted - 03/10/2004 : 13:40:44 [Permalink]
|
Is it only me, or is anyone else a bit uneasy at how much struture is shown to have taken place in our universe, from its beginnings, merely 500 to 700 millions years, earlier? Think there are a couple of chapters yet to be revealed of the ol' BB story, yet....
|
 |
|
|
|
Dave W.
Info Junkie
USA
26022 Posts |
Posted - 03/10/2004 : 14:09:44 [Permalink]
|
Merely? That's 3 to 5% of the universe's approximate age. It's actually a pretty damn long time.
Besides which, there's not much "structure" to be seen in the truly ancient objects in that photo. They mostly look like smears to me. |
- Dave W. (Private Msg, EMail)
Evidently, I rock!
Why not question something for a change?
Visit Dave's Psoriasis Info, too. |
|
|
|
Randy
SFN Regular
USA
1990 Posts |
Posted - 03/10/2004 : 16:49:11 [Permalink]
|
Here's quite a larger version of the image. Read the most distant light was detected at one photon per minute.
Amazing....
http://antwrp.gsfc.nasa.gov/apod/image/0403/hudf_hst_big.jpg |
"We are all connected; to each other biologically, to the earth chemically, to the rest of the universe atomically."
"So you're made of detritus [from exploded stars]. Get over it. Or better yet, celebrate it. After all, what nobler thought can one cherish than that the universe lives within us all?"
-Neil DeGrasse Tyson |
|
|
|
NubiWan
Skeptic Friend
USA
424 Posts |
Posted - 03/10/2004 : 16:57:37 [Permalink]
|
| You don't find it the least bit remarkable, that within this first "3 to 5%" span of the universe's existence, all of it's ordinary matter had time to cool enough to form, the first stars to collect themselves enough to flare into brightness, then to be assemabled into these 'smuge' galaxies..? It just seems that a lot of complex events have had to have taken place in a relatively short peroid to me. Yes, it is a pretty damn long time, just don't think it is enough time for them all to have happened, as these pictures show it apparently had happened. How organized were you at 4% of your life-span? Does Phil of the BABB still haunt these pages? If so, would sincerely invite him to note his own reaction.... |
|
|
|
|
Dave W.
Info Junkie
USA
26022 Posts |
Posted - 03/10/2004 : 18:28:52 [Permalink]
|
Let me put it a different way: I think it is very much remarkable that all these things occured in such a short time, but what's even more fascinating is the idea that it all came about due to completely natural causes which we appear to understand very well. Well enough know (generally) what a photo that far out (or back) should look like.
Another interesting thing is that there are people in the world, thousands (if not millions) of them, who understand all this stuff very much better than I do, who are not telling the interviewers at CNN that something appears to be wrong with the current theory's timetable.
Considering that within 300,000 years, the universe cooled from 1028 degrees C down to about 10K, spending another 600 million years doing the rest of the cooling required for stars to form doesn't seem to me to be much of a stretch of the imagination. Huge clouds of gas condensed to form both the first stars and first galaxies simultaneously, no assembly required. Under current conditions, stars can go from "big cloud of gas" to first light in about 30 million years. Multiplying that by some factor for post-Big Bang conditions doesn't seem unreasonable, nor would it seem to change my ideas much.
At 4% of my current age, I was about 18 months old. I would have been about 20% of my (normal - cough, cough) adult weight, and over 40% of my adult height. I'm not sure the analogy holds. |
- Dave W. (Private Msg, EMail)
Evidently, I rock!
Why not question something for a change?
Visit Dave's Psoriasis Info, too. |
|
|
|
NubiWan
Skeptic Friend
USA
424 Posts |
Posted - 03/11/2004 : 11:32:36 [Permalink]
|
| Yep, the "experts" are not holding these images up and saying, "Wait a minute..." And have been scanning for any blurbs on the HUDF pictures at heightned alert, too. Maybe the "Wow" effect just hasn't worn off yet..? As noted, we've entered a larger universe, or actually a more crowded one, at the least. Guess will just have to wait for NOVA to do a program about it, to explain it all to me. |
|
|
|
|
Trish
SFN Addict
USA
2102 Posts |
Posted - 03/12/2004 : 11:35:38 [Permalink]
|
quote:
Originally posted by Dave W.
quote:
Trish wrote:
You know, we keep finding older objects, just how far back in time are we going to get to look before we don't find anything else?
If the oldest objects in that photo were at about 700 million yeas after the Big Bang, we can only look about 699,700,000 years farther out. The theory goes, up until about 300,000 years after the Big Bang, the universe was opaque. The Cosmic Microwave Background (the light we can see coming at us more-or-less uniformly all over the sky) is made up of photons whose last interaction with matter occured just before the universe became transparent.quote:
I keep asking myself that question everytime I hear we're looking at the oldest objects in this or that pic. How many of those objects still exist in reality?
Perhaps some. No matter what, though, they definitely don't look like that anymore.
Well, I was being rhetorical. Also, we could be wrong about the age of the universe, we don't exactly know yet. Only our looking back in time will tell. Ok, I'm strange, but I have to ask those questions of myself, because I'd really like us to keep looking and see if we can find the 'edge of the universe'. Agree, about the not looking the same any more, they are afterall the images that we see as they were billions of years ago. Back to digging through the shed for my binocs.
Fixed for format error... |
...no one has ever found a 4.5 billion year old stone artifact (at the right geological stratum) with the words "Made by God."
No Sense of Obligation by Matt Young
"Say what you will about the sweet miracle of unquestioning faith. I consider the capacity for it terrifying and vile!"
Mother Night by Kurt Vonnegut, Jr.
They (Women Marines) don't have a nickname, and they don't need one. They get their basic training in a Marine atmosphere, at a Marine Post. They inherit the traditions of the Marines. They are Marines.
LtGen Thomas Holcomb, USMC
Commandant of the Marine Corps, 1943
|
| Edited by - Trish on 03/12/2004 11:39:35 |
|
|
|
Dave W.
Info Junkie
USA
26022 Posts |
|
|
Trish
SFN Addict
USA
2102 Posts |
Posted - 03/15/2004 : 10:20:46 [Permalink]
|
| Not to worry Dave. It's difficult in this format to tell when someone is looking for a laugh at their own expense. |
...no one has ever found a 4.5 billion year old stone artifact (at the right geological stratum) with the words "Made by God."
No Sense of Obligation by Matt Young
"Say what you will about the sweet miracle of unquestioning faith. I consider the capacity for it terrifying and vile!"
Mother Night by Kurt Vonnegut, Jr.
They (Women Marines) don't have a nickname, and they don't need one. They get their basic training in a Marine atmosphere, at a Marine Post. They inherit the traditions of the Marines. They are Marines.
LtGen Thomas Holcomb, USMC
Commandant of the Marine Corps, 1943
|
|
|
|
furshur
SFN Regular
USA
1536 Posts |
Posted - 03/15/2004 : 13:49:15 [Permalink]
|
It really humbles me to realize that all of that was made by God to "Let there be lights in the expanse of the sky to separate the day from the night, and let them serve as signs to mark seasons and days and years, and let them be lights in the expanse of the sky to give light on the earth."
Why do you think he put these galaxies so far away that we could not see them without a telescope as powerful as the Hubble. I suppose that he new we would invent the hubble and we can now use it to refine the calendar. Boy, I hope we can get rid of that darn leap year now.
Thanks for posting that photo it is truly breath-taking.
|
If I knew then what I know now then I would know more now than I know. |
|
|
|
Trish
SFN Addict
USA
2102 Posts |
Posted - 03/15/2004 : 16:28:59 [Permalink]
|
furshur,
Um, yeah... whatever. Isn't it more rewarding to wonder about how it all began, rather than just assuming god did it? Such as, string theory, the BB, etc, granulated quantum theory, etc... |
...no one has ever found a 4.5 billion year old stone artifact (at the right geological stratum) with the words "Made by God."
No Sense of Obligation by Matt Young
"Say what you will about the sweet miracle of unquestioning faith. I consider the capacity for it terrifying and vile!"
Mother Night by Kurt Vonnegut, Jr.
They (Women Marines) don't have a nickname, and they don't need one. They get their basic training in a Marine atmosphere, at a Marine Post. They inherit the traditions of the Marines. They are Marines.
LtGen Thomas Holcomb, USMC
Commandant of the Marine Corps, 1943
|
|
|
 |
|
|
|
Topic Locked
