Would Dark Matter have Propulsion Uses?

Here is a puzzle. There is a theory of dark matter that says
that dark matter is simply mirror matter. This is not antimatter
but matter that is reflected with respect to ordinary matter and
only interacts with ordinary matter through gravity, neutrinos
and very weakly (if at all) through electromagnetism.

This dark-mirror matter would have all the same particles
as ordinary matter but it would just be invisible, while
still having mass.

Here is an article about it
http://xxx.lanl.gov/PS_cache/hep-ph/...07/0207175.pdf

The neat thing is that the authors think you might find mirror
matter already in terrestrial materials and it could be extracted
with centrifuge techniques. There is speculation that there may
even be mirror matter bodies in the solar system.
The Tunguska object? Comets?

I've been trying to think of a use for this stuff, if it exists,
for rocket propulsion. But so far I can't think of one.

Any ideas? What to do with stuff that has mass but not much
else (from our point of view)?

Tom Clarke





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The dark matter that most astronomers talk about is not associated with any known objects and is known only because of its gravity. This dark matter probably does not clump together to form planet, star or black hole type objects because such things can be detected by their gravity. The dark matter is thinly dispursed in the space occupied by galaxies. It may be particles which are too hot to condense yet not hot enough to excape the galaxy. I cannot imagine any use for the stuff.