Interesting summary of a vast topic, and a great argument for planting a basin sized telescope on the Moon's farside, which will be directly under the Legrange point where they plan to "park" the long, long planned JWST...
thanks, much.
I prefer the lunar South Pole.
In a crater, in perpetual shadow.
Pointed at the center of the Galaxy.
Serviced by an army of robots.
Manned by astronomers.
Visited by tourists.