There’s no such thing as “dark matter.”
It’s a mathematical construct, nothing more.
I wish I had their equipment for a few weeks of viewing..
Canada-France-Hawaii Telescope (CFHT)
Cosmologists unfold the dark cosmic web
http://www.cfht.hawaii.edu/News/CFHTLS0802/
So is G
Perhaps. But I have no problem accepting that there is matter out there that doesn’t generate light, e.g. rocky planets, burned out suns, whatever. When suns die out there is dark matter debris.
One of many, actually. When you need to posit an entire scalar field to save the observations, the theory that predicted a zero field everywhere is wrong.
Hmmm. I found this article that says it does exist.
"A universe that's dominated by dark stuff seems preposterous, so we wanted to test whether there were any basic flaws in our thinking," said Doug Clowe of the University of Arizona at Tucson, leader of the research team. "These results are direct proof that dark matter exists.................Sean Carroll, a cosmologist at the University of Chicago who was not involved with the study. "No matter what you do [in devising new theories] you're going to have to believe in dark matter," he said.
go here for the full article http://www.msnbc.msn.com/id/14453775/
Actually it's a term used instead of admitting that current cosmological models don't work out mathematicly in certain situations. (ie. why do the edges of galaxies rotate just as fast as the center?)