Dark matter just regular matter

[astrophoto]

I am sure this has been discussed before, but I failed to find an exact reference here.<br /><br />Why can't 'dark matter' simply be matter that isn't close enough to an energy source to be seen via our current technology? Think about the KB and OC and the mass that contains -- we cannot directly detect much of it aside from a few recent large KBO's. I am sure larger and/or older stars would have undetectable masses larger than our own. Then take into account inter-stellar space and the possibility of super massive objects/collections of objects without an energy source... can anyone truly say that we think inter-stellar space is empty? I doubt it...

 

[harmonicaman]

I also believe that Dark Matter is simply regular stuff that we just can't see. I think the "Exotic Particles" theories are missing the obvious...

 

[jessez13]

There is just way to much mass involved. <br />To get a flat velocity curve seen at the edge of galaxies you need an average mass density that is the same as the whole galaxy within that radius.<br />This includes the giant black hole that is usually found in the center. <br />To me the simplest explanation is that we just do not understand gavity on the galactic scale or intergalatic scale.<br />

 

[contracommando]

When matter and anti-matter come into contact, they annihilate each other. Immediately after the big bang, the universe was so small that virtually all naturally occurring antimatter would have been destroyed, and any left would be in such small concentrations as to be negligible in estimating the mass of the universe (because there is supposedly much more Dark matter than matter, antimatter cannot be the missing mass). Furthermore, antimatter is also gravitationally attractive, so if there were large amounts of it in the universe we should have be able to see many matter-antimatter collisions, galaxies, stars, etc. But we have not.

 

[honda_f1]

you mean they turn into energy right?<br /><br />matter + antimatter = energy<br />i thought thats what the universe was going though when initialy <br />exchange of matter - energy - matter exchanging back and forth

 

[bonzelite]

to harmonicaman:<br /><br />+1 <img src="/images/icons/wink.gif" />

 

[chew_on_this]

So, what about the dark anti-matter?

 

[kmarinas86]

http://www.cem.msu.edu/~cem181fp/antimatter/research.html<br /><br /><font color="yellow">From this breakthrough in the understanding of antimatter, research has a multiple areas in which to explore. Scientists could try to recreate the beginning of the universe with equal amount of matter and antimatter to try to experimentally demonstrate that there will always be matter left over. Even with equal amounts, the new finding regarding epsilon and kaons shows that some antimatter spontaneously turns into matter, therefore there will always be more matter than antimatter.</font>/safety_wrapper>

 

[contracommando]

<font color="yellow">you mean they turn into energy right?</font><br /><br />Yes.

 

[contracommando]

<font color="yellow">So, what about the dark anti-matter?</font><br /><br />Scientists aren’t even sure what DM is (whether it be a misunderstanding of gravitation and the laws of motion, some type of new elementary particle called an <b>Axion</b>, or perhaps matter in another universe approximately one millimeter away from our own) so I couldn’t even begin to guess. <br />

 

[bonzelite]

don't forget rainbow skittles matter, too. that's vital in a cohesive universe. and don't rule out the spooky fuzzy bunny matter, either. we've got to keep the victim in ICU alive for another day <img src="/images/icons/wink.gif" />