> Hi Kristin,
> I think the crux of the article is that matter-matter
> intereactions will act with positive gravity, antimatter
> antimatter interactions would act with positive gravity, but
> that matter-antimatter interactions would have negative gravity
> (or anti-gravity), while all having positive mass.
> Antimatter wouldnt repel light though, since light would react
> with anti-matter the same as with normal matter, since it has
> no rest mass.
> Also, if you found entire galaxies made completely of
> antimatter, how would you know? I remember reading something
> related to this in a popular science book, of how, if you were
> in communication with an alien race, how you could work out if
> they were made of antimatter, before you met them.
> Unfortunately, i cant remember the discussion, nor which book
> it is, but I shall try and chase it down.
No idea either.
But theoretically, don't matter and anti-matter destroy each other?