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Post by bixaorellana on Feb 26, 2010 18:39:10 GMT
"... in recent decades, researchers have become increasingly convinced that there is a vast amount of material in the universe that does not glow at all. This mysterious "dark matter" is believed by most scientists to be the most common stuff in the universe, perhaps making up 90 percent or more of the total mass. Dark matter does not emit enough energy to be directly detected. But indirectly, researchers note its presence. Anything that has a mass exerts the force that we call gravity. Dark matter -- or something that we have yet to find -- exerts a gravitational pull on objects in and around distant galaxies, and even on light emitted by those objects, say scientists at NASA's Goddard Space Flight Center." Read the full article here: www.space.com/scienceastronomy/astronomy/dark_matter_sidebar_010105.htmlDon't miss this video: www.space.com/common/media/video/player.php?videoRef=080612-dark-matter
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Post by gertie on Mar 13, 2010 18:31:25 GMT
Scientific American has had some articles about it over the years. Does it exist, what is it, is this really just some things we haven't discovered yet, the play of alternate universes on ours, lots of conjecture. Thanks for the video, Bixa
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Post by onlymark on Mar 13, 2010 19:23:34 GMT
Dark matter seems to be one of those things that is supposed to be there but nobody has actually seen it yet(?) It's a bit like how they detected various black holes and other phenomena by observing the effect it had on known things.
Even harder to detect though, to put your finger on it as it were, are two very much lesser types of matter. They know of matter, anti-matter and dark matter and they've been trying since time immemorial to reconcile their calculations with the existence of two more types. Watsa and Dusit.
If they ever will, who knows.
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Post by onlymark on Mar 13, 2010 19:26:11 GMT
I will have a read though and look at the video shortly.
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Post by bixaorellana on Mar 13, 2010 19:54:24 GMT
You mean when you get a round toowit?
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Post by imec on Mar 13, 2010 20:13:49 GMT
Nothing dark matter with me; what's dark matter with you?
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Post by onlymark on Mar 13, 2010 20:15:30 GMT
You mean when you get a round toowit? I see you pay attention.
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Post by bixaorellana on Mar 14, 2010 2:19:48 GMT
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Post by spindrift on Mar 14, 2010 9:19:57 GMT
I know some people who seem to be dark matter. I might not know what it is but I can recognise it.
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Post by Deleted on Mar 14, 2010 11:50:39 GMT
I agree, Spindrift.
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Post by Deleted on Mar 14, 2010 12:08:11 GMT
Nothing dark matter with me; what's dark matter with you? ;D (I've been wanting to send you this for a long time, so to hell with it I will!) ....>
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