After re-reading some of Steve Baer's material on the «Double Play» solar heater and cooler, and the FSEC's work on
radiation home cooling, I got to wondering if the same collector that I prototyped for the simple pool heating might also be put into service as a night time radiator to cool water.
Recognition of the fact that all of space is bathed in
radiation, providing a ghostly image of the
cool afterglow of creation, would have to await the development of modern technologies designed not to explore eternity but to allow humans to phone
home.