At 03:27 PM 6/27/2003 -0700, Scott Huddleston wrote:
... modification of gravitational attraction at large distances also offers some theories.
I was asking about this, which I think is known as MOND (Modified Newtonian Dynamics) awhile ago (October 14, 2002). What little I could find about it made it sound like it was more math than physics, in the sense that it didn't really try to give much of a physical explanation of *why* things might be that way. Yet they seem to be able to predict some observable effects (according to what little I read). Is this theory considered a contender these days, or is there some good reason it is not taken seriously? There's a web site http://www.astro.umd.edu/~ssm/mond/ which purports to give some of the basics. At least it's an interesting alternative to cold dark matter, for whatever it's worth. Shel