It would make more sense to me if it was an estimate of the current distance. An estimate of the distance seen, instead, would be more directly based on the red-shift. I think they should give both distances, to make it clear.
if it was an estimate of the current distance
It would. But I am afraid it might not be. That would turn things inside out.
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson