what would the subtle differences be???

[Jim Green <Jim.Green@Snow.edu>]

> From the Earth and Sky broadcast transcript at
http://www.earthsky.com/1996/es960904.html

-===========================================================================
> JB:  He writes, "How do we know that distant galaxies, or for that
> matter, whole regions of the universe, are not made of antimatter? We
> only interact with these distant sources by seeing their light . . ."
>
> DB:  The truth is, Martin, we don't know for certain.   Antimatter would
> look just the same as ordinary physical matter.  It has the same basic
> structure -- but fundamental particles of antimatter have their
> electrical charges reversed from that of ordinary matter.
>
> JB:  There would be subtle differences between the appearance of the
> light from matter galaxies -- and antimatter galaxies.  But no
> astronomer has yet detected what he or she thinks is light from an
> antimatter galaxy.   Astronomers think it isn't likely that any distant
> galaxies are made of antimatter -- because when antimatter and matter
> interact, they turn into pure energy -- what we'd see as a colossal
> explosion.
-==========================================================================

Just what would those "subtile differences" be, does the list suppose????


Jim.Green@Snow.edu                             

All that is gold does not glitter. 
Not all those who wander are lost. 
The old that is strong does not wither. 
Deep roots are not reached by the frost. 

J.R.R.Tolkien