Focus on the universe: An overview of modern telescopes and what they see https://www.mpg.de/24878805/telescopes-in-comparison?c=155071
An overview of the unique characteristics of the four prominent telescopes Hubble, James Webb, Euclid and Vera C. Rubin, which observe the universe from different perspectives. The article also explains in very general terms what information is contained in the data and images from telescopes.
Euclid’s goal is to study dark matter, which is invisible but influences the movement