invisible galaxies of dark matter?

Question

http://www.space.com/scienceastronomy/050223_dark_galaxy.html

crazy.........

Answer 1

Very interesting! Thanks for the link. The concept of a dark matter galaxy makes sense too.

As for there being few or no visible stars within this dark matter galaxy, the article addresses that issue ==>

"...The invisible galaxy is thought to lack stars because its density is not high enough to trigger star birth, the astronomers said..."

Answer 2

dark matter would emit some kind of dark energy.
dark matter stars would not emit visible light.
stars ARE atoms, many many of them being fused together under intense heat/pressure. the energy released during this fusion is expressed as a boson (energy carrying particle)
the energy stored in bonded dark matter probably wouldn't be expressed as bosons, thus undetected on the electromagnetic spectrum. i dont know if that is correct... im not a particle physicist, but, if dark matter's most elemental particles are able to interact in a meaningful way, l'd seem just as likely to have dark matter galaxies and a completly different dark matter spectrum of energy states...
Possibly, life forms exist made completly of dark matter...
why not, running around cooking their dark matter hot pockets with dark energy microwaves...
is seems inconceivable yet intuitive that humans (all life on earth) never came into contact with such matter thru all of evolution, thus never developed any sensors to detect it.

Answer 3

hmmm intresting idea, i thought about that a few times. But, if they are galaxies would they not have stars? and stars are not atoms but events which cause light, hence would emit light and heat which are detectable, hence would not be dark.