Here is the paragraph from an LSAT;
Some say that funding the megatelescope will benefit only the astronomers who will work with it. This dangerous point of view, applied to the work of Maxwell, Newton, or Einstein, would have stifled their research and deprived the world of beneficial applications, such as the development of radio, that followed from that research.
My questions are:
Why the second sentence uses "their research" instead of "researches"? I thought these three scientists lived in different times and didn't work together for a research.
Following the same reason above, why at the end the paragraph puts "that research"?
Thank you very much.