Mohit Pandey Posted September 21, 2006 Report Posted September 21, 2006 :naughty: Can anyone tell me what dark energy and dark matter are? I know scientists are trying to define it correctly. But if they do not what it is , how did they came to know about it? What is dark about it?:evil: Quote
Jay-qu Posted September 21, 2006 Report Posted September 21, 2006 Basically with dark matter, we cant directly observe the stuff, because it doesnt give off (or very little) light. But we can tell its there because of the way we believe the galaxy should rotate. According to our laws of gravitation, if sum up all the visible matter, it doesnt account for the way we observe the rotation of the galaxy, hence there must be more matter there that we just cant see. There has been some attempts the find this missing mass, and some of it has been found as black holes and MACHO's, there are also WIMP's Quote
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