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Thread: Hubble Deep Field: The Most Important Image Ever Taken

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    MsQwerty
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    Default Hubble Deep Field: The Most Important Image Ever Taken

    Fascinating!

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    Senior Member as_intended's Avatar
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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    wow. that is all. just wow
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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    So cool.....

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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    it's a LOT bigger than anyone can imagine


    we humans seem to think we are so all-fired important that some creator put us here all alone to reign over nature and all we can do is to destroy it and ignore the enormity of our responsibility
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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Super confusion here.

    47 billion light years? How? The last I heard the universe was somewhere around 15 billion years old. How are they seeing 47 billion years back in time? Because that is how old those "galaxies in the empty night sky" would have to be.

    Or, am I just retarded and missing some simple piece of information here?

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    Tauries
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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Quote Originally Posted by headlesschicken View Post
    Super confusion here.

    47 billion light years? How? The last I heard the universe was somewhere around 15 billion years old. How are they seeing 47 billion years back in time? Because that is how old those "galaxies in the empty night sky" would have to be.

    Or, am I just retarded and missing some simple piece of information here?

    *Cough* light years are a measurement of distance, as in how far light travels in one year.

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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Quote Originally Posted by Tauries View Post
    *Cough* light years are a measurement of distance, as in how far light travels in one year.
    Right.

    So how am I seeing things 47 billion light years away, ie, 47 billion years old, if the universe itself is less than half that old?

    If something is 47 billion light years away, that means the light from that source took that long to reach the telescope. Eh?

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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    ^ something like that. I've heard that too. but just because light from other galaxies took 47 billion light years to get to where we are, that doesn't me that our point of reference has been in existence for 47 billion years. Our galaxie could be only 15 billion years old.

    but then, this isn't one of my specialities.

    Watching that video made me feel better. Like, no matter how much we're screwing up the planet, there's hope that some race out there is doing a better job by their planet. While it would be sad to lose all of the species on our planet (considering we've mad such a huge dent anyway), it just makes me feel better. Like all those species are just a drop in the bucket compared to all the other ones out there-- and with all those galaxies with all those potential planets, I'm thinking there's bound to be a few with species that mirror our own.

    I think I'm going to name my next dog Hubble.

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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    THIS is what I was talking about all those times I referred to reflecting on deep space when one feels overwhelmed by daily life.

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    Tauries
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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Quote Originally Posted by headlesschicken View Post
    Right.

    So how am I seeing things 47 billion light years away, ie, 47 billion years old, if the universe itself is less than half that old?

    If something is 47 billion light years away, that means the light from that source took that long to reach the telescope. Eh?

    Well me just being a humble monkey button pusher and all, I'll try anyway. I kinda skipped thru alot of the video but I did hear their assertion that the RADIUS of the universe was 47 billion light years across. Its been well over a decade since engineering school and thus my astro-physics may be a little rusty but here goes; The universe IS expanding, thus in a 15 billion year OLD galaxy, while one would think that this only allows a visible radius of 30 bil. light years (15 each direction from center point ), the truth may be that the light source has moved farther away than it was when originally starting the emission. Whew! Think I'll stick to Rammstein .

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    Featured Member paintgoddess's Avatar
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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Quote Originally Posted by Tauries View Post
    The universe IS expanding...
    ^ Which is amazing. If you think about it, that fact points to the idea that there was a point in time and place where the universe originated, and time and space had a beginning.

    I love watching stuff like that. My dad is a scientist and believer in the Creator (as am I) and gets tears in his eyes when he sees stuff like that because it's so incredible and overwhelming. We really are small. Whether you share the same beliefs or not, it's still humbling.
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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Quote Originally Posted by headlesschicken View Post
    Right.

    So how am I seeing things 47 billion light years away, ie, 47 billion years old, if the universe itself is less than half that old?

    If something is 47 billion light years away, that means the light from that source took that long to reach the telescope. Eh?


    http://csep10.phys.utk.edu/astr162/l...ightspeed.html
    From what I cam surmize the observable universe is 13.7 billion years old. That is, the light we detect at any one time in any direction has traveled 13.7 billion years to reach us. 13.7B is the radius, so the observable diameter is 27.4 billion lightyears across.

    However since the farthest reaches of the universe are expanding on a rate that is a significant percentage of the speed of light, the galaxy we see now may actually be on the order of twice as distant as we see it, hence doubling our observable distance, which is approximately 50 billion lightyears across or close to 2 times the 27.4. I believe his statement that the radius is 47 billion lightyears should probably be a diameter of 47B.

    Distance measured in light speed is a funny thing since the speed of light is the ultimate speed limit. Astronomers believe if a supernova exploded in the vicinity of earth, say a few lightyears away, that all life on earth would be destroyed instantaneously when the energy shockwave reaches us. The thing is we would never have those few years to prepare ourselves to escape the destruction since we wouldn't know that star exploded until the light and x-rays and gamma rays hit us. Of course, we'd never know what hit us.

  13. #13
    Tauries
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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Quote Originally Posted by paintgoddess View Post
    ^ Which is amazing. If you think about it, that fact points to the idea that there was a point in time and place where the universe originated, and time and space had a beginning.

    I love watching stuff like that. My dad is a scientist and believer in the Creator (as am I) and gets tears in his eyes when he sees stuff like that because it's so incredible and overwhelming. We really are small. Whether you share the same beliefs or not, it's still humbling.
    Very cool. There are some great shows on the history channel like . Thanks Chop...if I'm not mistaken not only is the universe expanding but the rate of expansion is actually accelerating. Cool until our Milky Way galaxy crashes into the Andromeda galaxy in a few billion years . Check out!

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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Quote Originally Posted by Tauries View Post
    Very cool. There are some great shows on the history channel like "The Universe". Thanks Chop...if I'm not mistaken not only is the universe expanding but the rate of expansion is actually accelerating. Cool until our Milky Way galaxy crashes into the Andromeda galaxy in a few billion years . Check THIS out!
    Yea, the universe is quite the miracle. It's interesting to note that as the universe expands that the galaxies at the outer edges (from our perspective) are not actually traveling at close to the speed of light away from us. If they were the matter in them would become more massive as Einstein's E=mc2 would predict. What is happening is the space between galaxies is growing. Space has no speed.

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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    I love stuff like this. I always have. I love that humans are capable of so much. I love the thought that the Universe we live in his so huge and beyond what we can comprehend. I always wish more people could see the freedom in letting go of the daily grind just for a few moments here and there to contemplate how amazing and big our Universe is. What is even more amazing to me? It is even larger in the other direction. It even vaster if we look towards the smaller, towards the inner world of molecules, atoms, sub-atomic particles, and hopefully smaller still. Awesome!

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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Very cool, Ms.Q, and an excellent example of how advances in scientific knowledge are frequently driven by parallel technological advances...

    P.S. About halfway through the video, I had the paranoid delusion that I was about to get Rickrolled!

    Quote Originally Posted by xdamage View Post
    What is even more amazing to me? It is even larger in the other direction. It even vaster if we look towards the smaller, towards the inner world of molecules, atoms, sub-atomic particles, and hopefully smaller still. Awesome!
    You beat me to it, xschaden! I imagine that Van Leeuwenhoek experienced the same sense of wonder as those NASA scientists when he first he peered into the microcosmos through the rudimentary microscope that he invented.

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    MsQwerty
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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Quote Originally Posted by Budai View Post
    Very cool, Ms.Q, and an excellent example of how advances in scientific knowledge are frequently driven by parallel technological advances...

    P.S. About halfway through the video, I had the paranoid delusion that I was about to get Rickrolled!
    The first youtube clip of this I found had a big Rickroll in it - thats if I understand what Rickrolling is correctly!

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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Quote Originally Posted by MsQwerty View Post
    The first youtube clip of this I found had a big Rickroll in it - thats if I understand what Rickrolling is correctly!
    Clipped from UV's "Rickrolling?" thread...

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    MsQwerty
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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Quote Originally Posted by Budai View Post
    Clipped from UV's "Rickrolling?" thread...

    Thank you Budai
    Is it still Rickrolling if its not Rick?

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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    ^ I dunno, MsQ.!

    That's one of the mysteries of the cosmos...

    Would being tricked into watching a video of "_____", be "_____rolling"?

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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Quote Originally Posted by chop View Post
    ...It's interesting to note that as the universe expands that the galaxies at the outer edges (from our perspective) are not actually traveling at close to the speed of light away from us. If they[there] were the matter in them [, they] would become more massive as Einstein's E=mc2 would predict. What is happening is the space between galaxies is growing. Space has no speed.
    This acceleration, cosmologists speculate, is due to something called "dark energy" which is the energy/force that is pushing everything apart. It is in fact a quite nebulous concept at present. [no speed] Except everything in space has a speed; there is no center to measure against. Further, it seems to me, from what I've read, that at the instant of the Big Bang all matter and energy, or whatever mix existed then, did not exist at a single point, but was spread over a wide region and the Big Bang began actually a sort of nucleation process that started the coalescing process into early forms of matter and energy and the ultra high velocities that the Big Bang started.

    Fascinating stuff.
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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Quote Originally Posted by Tauries View Post
    Very cool. There are some great shows on the history channel like "The Universe".
    I've watched that and its fucking amazing. One part of the the show was about dark matter and I was blown away. It really is a cool show.

    I'm finishing the vid. Whoooooaaaa. Thanks for posting. I feel so itty bitty yet its crazy how everything we do day to day effects us as individuals and others so much. Really makes me wonder what's out there. We really can't be alone.
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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Remember when I said I go to observatories when I have a panic attack?

    This is why.


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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    Quote Originally Posted by chop View Post
    Yea, the universe is quite the miracle. It's interesting to note that as the universe expands that the galaxies at the outer edges (from our perspective) are not actually traveling at close to the speed of light away from us. If they were the matter in them would become more massive as Einstein's E=mc2 would predict. What is happening is the space between galaxies is growing. Space has no speed.
    A commonly used model is to take a balloon. Half fill it. Take a pen. Draw some dots representing galaxies on the surface of the balloon. The surface of the balloon represents space in this model. Now add more air. Note how all of the dots are further away from each other. For bonus points, note that the dots have also gotten larger too.

    This is an example of a 2-d surface expanding in all directions at the same time (a 3rd physical dimension is required). It is not really possible for our brains to visual the analogous situation of our three dimensional universe expanding like this (probably requiring a 4th physical dimension) but even if we can't visualize it, we can conceive how such thing could be possible.

    Another way to say it then is to say that space (and matter) are more stretched out (or you could say less compressed) then they were in the past.

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    Default Re: Hubble Deep Field: The Most Important Image Ever Taken

    I've read that there are more stars in the universe than there are grains of sand on every beach on the whole planet.

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