(March 27, 2010 at 12:21 pm)Darwinian Wrote: Dark matter is a place holder used to explain the behaviour of rotating galaxies and may not actually exist at all. As for it being a realm, then it's no more a realm than a cloud of gas and dust is.
Although I could be wrong
Dark matter reminds me of the old, superseded concept of 'ester' or 'ether' that was said to be the medium that light travels through.