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Thread: Dark Matter
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01-07-2010, 08:22 PM #11
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Thanked: 143Don't dismiss that "inferred from" too lightly. How do we know of or become aware of *anything* other than inferring it through our senses' interpretations of whatever it is they are sensitive to? If we look at a tree, is there really a tree there? We can infer its existence from our sensitivities to a variety of electro-magnetic effects (e.g. light waves, touch). Most would accept that evidence for the existence of a tree. If dark matter's existence can be inferred from gravitational effects why is that less substantial?
I guess it matters what is meant by "dark matter". There are a variety of gravitational observations etc. that indicate *something* heretofore unnoticed is "there". If "dark matter" simply is a short-hand name for referring to "whatever it is that is causing those effects" it pretty much indisputably exists. If we insist on knowing more about it (as we do insist) then perhaps we don't want to give it the respect of acknowledging its existence without a deeper understanding of *what* it is.
Of course if you got in an epistemological knot over the existence of a tree a Zen master would knock you over the head with a branch cut from the tree and ask if you now believe in it. I guess we are not there yet with dark matter.Last edited by TexasBob; 01-07-2010 at 08:31 PM.
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01-07-2010, 08:26 PM #12
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Thanked: 735And this is part of my argument. It doesn't add up.
So, with some hand waving, scientists say "let there be dark matter", and behold it was good, because it filled in the missing blanks on their calculations.....
So, there could possibly be such a thing as dark matter, or perhaps the original calculations are in error in some regard when dealing with things on that scale?
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01-07-2010, 08:30 PM #13
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01-07-2010, 08:51 PM #14
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Thanked: 1587Everyone chooses their God. Just some are more overt about it than others. And some are more optimistic than others (I think I prefer the mindset of people who choose the "great unknown" to be immeasurable love over those who choose it to be the remainder of an equation that did not quite give the expected results in a computer simulation).
James.<This signature intentionally left blank>
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01-07-2010, 09:10 PM #15
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Now I see.......
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01-07-2010, 09:14 PM #16
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Thanked: 143
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01-07-2010, 09:18 PM #17
If you are trying to explain the existence of God(s) with dark matter, you are doing yourself a bad favor.
There are surely blanks, and even errors in scientific calculators, but as the time goes by they will get explanation.
That is not the same with religion. People in faith do not have blanks or errors.
I never repeat myself and now i do it again Faith doesn't need scientific proof. All you need to do is believe and that's it.
That is not the same with sciences. All the blanks and errors need reassessment and more calculations. Not closing eyes.
Those who in faith believe there was a dude who could wake up people from the death. Those who rely on science know he had a defibrillator.'That is what i do. I drink and i know things'
-Tyrion Lannister.
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01-07-2010, 09:24 PM #18
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Thanked: 735From the NASA website:
Remarkably, it turns out there is five times more material in clusters of galaxies than we would expect from the galaxies and hot gas we can see. Most of the stuff in clusters of galaxies is invisible and, since these are the largest structures in the Universe held together by gravity, scientists then conclude that most of the matter in the entire Universe is invisible.
From Wiki:
Only about 4.6% of the mass of Universe is ordinary matter. About 23% is thought to be composed of dark matter. The remaining 72% is thought to consist of dark energy, an even stranger component, distributed diffusely in spac
Who's the one with the imaginary friend in the sky now?
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01-07-2010, 09:34 PM #19
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Thanked: 1587Are you sure you were not a bullfighter in another life Seraphim?
James.<This signature intentionally left blank>
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The Following User Says Thank You to Jimbo For This Useful Post:
Seraphim (01-08-2010)
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01-07-2010, 09:37 PM #20