Originally posted by Treacherous
Blah blah blah! (Not you OP) but the scientists behind this kind of research. They've no blardy idea. And why should they? they're little men in off
white shirts, with big ears and over excited grey matter inbetween. Nobody really knows anything beyond earth and so very little here and now to that
ends. So I take all of this stuff with a pinch of salt but thank you OP, I keep getting drawn to your posts so it seems. 
April 21st, 1820: Hans Christian Orsted discovered electromagnetism. At the time it was all blah blah blah and meaningless definitions.
But, unlike KOGDOG and perhaps yourself, Maxwell, Faraday, and many other great scientists did not think reaserching more into the unknown was a
waste.
250 years later and we have electric transformers, wireless internet, microwave ovens, etc, etc, all from a little discovery that wasn't understood
2.5 centuries ago. So this 'blah blah blah' scientists you are talking about may very well be the Christian Orsted of the future.
I think 250 years ago some people may have mentioned that Orsted was overexited about nothing - those persons, however, did not make it into any
history books 
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reply to post by michael
Never fear, it's not that hard. Basically, what scientists are saying is that there is something beyond what we can see that is pulling everything
towards it.
For instance, imagine that there is a black balloon blown up with air and tied off. If you decrease the pressure outside the balloon, it will grow
bigger because the air now wants to leave all that much more. You can't see the air outside the balloon, but you know it's there because the balloon
is getting bigger.
Same concept here, except gravity is the lowering of pressure outside the balloon, and instead of it being black in the lack of color sense, the light
from this area simply hasn't reached us yet.
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