Hi Chris

"Chris.B" wrote in message
...
Q: Images of distant galaxies contain both light and dark matter that is
only visible to us...

Dark matter and dark energy are not merely the absence of light.

Good point (I stand corrected as usual) but it isn't visible to us (yet)
which is why it's dark isn't it?

"Shadow only has value where substance has fled." (or words to that
effect) ;-)

Having trouble getting my head round that one but thanks for the reply.

Neil