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02/15/2011 02:46:26 PM · #26 |
Originally posted by DrAchoo:
Originally posted by coryboehne:
You are quite correct, although I didn't see any point in over elaborating, I'm trying to learn Slippys gift of succinctness.. |
No prob. I think what got me to respond was the idea that there could be a "behind" and a "in front of". These words lead to an incorrect image in one's mind. |
Clearly I still have some learning to do... |
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02/15/2011 02:55:13 PM · #27 |
| You are all just fleas on a dog in America, speculating about the dog in Antarctica. |
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02/15/2011 03:02:40 PM · #28 |
Originally posted by DrAchoo:
No prob. I think what got me to respond was the idea that there could be a "behind" and a "in front of". These words lead to an incorrect image in one's mind. |
I remember when my dad first saw a photo of the earth taken from the moon. He couldn't figure out how it was taken, since the moon is above and the earth is below. To quote, "What did they do, walk over to the edge of the moon and shoot down?" |
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02/15/2011 03:04:04 PM · #29 |
Originally posted by Strikeslip:
You are all just fleas on a dog in America, speculating about the dog in Antarctica. |
No, I'm a dyslexic agnostic insomniac... I lie awake wondering if there really is a dog! |
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02/15/2011 04:00:35 PM · #30 |
Originally posted by citymars:
I remember when my dad first saw a photo of the earth taken from the moon. He couldn't figure out how it was taken, since the moon is above and the earth is below. To quote, "What did they do, walk over to the edge of the moon and shoot down?" |
ROFL! |
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02/15/2011 08:37:16 PM · #31 |
| Well, I wonder if there really is a kirbic, but I don't lose sleep over it. |
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02/15/2011 08:42:10 PM · #32 |
Originally posted by David Ey:
Well, I wonder if there really is a kirbic, but I don't lose sleep over it. |
Ach, you got me, I'm really nobody ;-) |
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02/15/2011 09:00:33 PM · #33 |
Originally posted by kirbic:
Originally posted by David Ey:
Well, I wonder if there really is a kirbic, but I don't lose sleep over it. |
Ach, you got me, I'm really nobody ;-) |
Is that an admission of duplicate accounts? ;-) |
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02/15/2011 10:33:24 PM · #34 |
"Space is big. Really big. You just won't believe how vastly, hugely, mindbogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space..."
hitchhiker's guide to the galaxy
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02/15/2011 10:55:38 PM · #35 |
Our progress towards realizing our insignificance.... We used to think that:
The things we see around us must be the most important parts of the Universe.
The Earth is not the center of the Universe - we move about the Sun.
The Earth is not special; it is a typical small-ish planet.
The Sun is not special it is an ordinary small-ish star like billions of other stars in the Milky Way.
The Milky Way is a typical slightly large-ish Galaxy that resides in a small-ish Local Group of Galaxies.
The largest concentrations of mass are clusters of super-clusters of galaxies halfway across the visible Universe. It is called the Great Attractor and is pulling from across the Universe.
We are made of atoms, which is not the typical matter that makes up the Universe. 90% of all matter is dark matter, which we can't even see.
We are make of matter. 70% of the mass of the Universe isn't even matter. It is Dark Energy.
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02/15/2011 11:00:57 PM · #36 |
| the other end of the scale is: the 'blank' space between the nucleus of an atom and its shell. if the necleus was the size of a pinhead, the shell would be the size of a football stadium.... |
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02/16/2011 09:10:59 AM · #37 |
Originally posted by jkn:
"Space is big. Really big. You just won't believe how vastly, hugely, mindbogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space..."
hitchhiker's guide to the galaxy |
lol, i re-read these books regularly just for the quotes!
"So what's the point of showing me something I can't see?" |
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02/16/2011 09:22:21 AM · #38 |
Originally posted by DrAchoo:
No prob. I think what got me to respond was the idea that there could be a "behind" and a |
Thinking about Slippy huh? |
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02/16/2011 01:43:19 PM · #39 |
Originally posted by mycelium:
The clearest explanation I ever heard of why everything looks like it's moving away from us is this:
Imagine that you're cooking a loaf of raisin bread. When you put the pan in the oven, the dough is dense and the raisins are tightly packed. As the bread cooks and the dough rises, the raisins all space out and each grows more distant from the others. |
That is good but the analogy of putting dots on a balloon and blowing it up is an even better one for describing the Universe as we know it.
Its hard to convey the sense of change we observe in the Universe with raisin bread compared to blowing up a balloon. The balloon demonstrates both the expansion of the universe and its correct sense of change over time from very tiny 14 billion years ago to ginormous today.
Since light travels snail-paced at only 186,000 miles per second it takes about 14 billion years for it to traverse the observable universe.
That means that the further away we look, the further into the past we are seeing. Not only is the universe generally expanding uniformly but it is expanding at an ever increasing velocity as we look further into the past at greater distances.
Basically, we are staring back toward the moment of creation that we call the "big bang". |
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02/16/2011 03:36:01 PM · #40 |
Originally posted by Artifacts:
Originally posted by mycelium:
The clearest explanation I ever heard of why everything looks like it's moving away from us is this:
Imagine that you're cooking a loaf of raisin bread. When you put the pan in the oven, the dough is dense and the raisins are tightly packed. As the bread cooks and the dough rises, the raisins all space out and each grows more distant from the others. |
That is good but the analogy of putting dots on a balloon and blowing it up is an even better one for describing the Universe as we know it.
Its hard to convey the sense of change we observe in the Universe with raisin bread compared to blowing up a balloon. The balloon demonstrates both the expansion of the universe and its correct sense of change over time from very tiny 14 billion years ago to ginormous today.
Since light travels snail-paced at only 186,000 miles per second it takes about 14 billion years for it to traverse the observable universe.
That means that the further away we look, the further into the past we are seeing. Not only is the universe generally expanding uniformly but it is expanding at an ever increasing velocity as we look further into the past at greater distances.
Basically, we are staring back toward the moment of creation that we call the "big bang". |
I'd rather think of us as raisin bread. Balloons pop. Raisin bread gets to a certain yummy point and stops... Unless no one takes it out of the oven... then it burns. Oh god, we're all going to die! |
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02/16/2011 03:43:03 PM · #41 |
Originally posted by aliqui:
I'd rather think of us as raisin bread. Balloons pop. Raisin bread gets to a certain yummy point and stops... Unless no one takes it out of the oven... then it burns. Oh god, we're all going to die! |
Life is, in fact, a terminal illness.... |
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02/16/2011 06:44:06 PM · #42 |
Originally posted by aliqui:
I'd rather think of us as raisin bread. Balloons pop. Raisin bread gets to a certain yummy point and stops... Unless no one takes it out of the oven... then it burns. Oh god, we're all going to die! |
I probably should have said INFLATE the balloon rather than "blowing it up". ;)
If this helps to know... last time I looked the latest science suggested that our Universe would quietly keep expanding forever, slowly cooling and extinguishing.
However, there has been a lot more dark matter discovered since the last time I looked and there may be enough of it to reverse direction and flatten us in a "big crunch" a few 10s of billions of years from now. lol!!!!
Message edited by author 2011-02-16 18:45:26. |
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02/16/2011 07:42:13 PM · #43 |
Originally posted by larryslights:
"We're probably not in the center of the Universe." |
Oh, I know exactly where the center of the universe is... He"s upstairs playing on the Internet.
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