One way in which the contributions of Copernicus, Gallileo, and Newton are similar is that each: 1. based his work on enlightenment principles of social contract 2. practice observation and experimentation in his work 3. supported the work of the inquisition

One way in which the contributions of Copernicus, Galileo, and Newton are similar is that each supported the work of the inquisition. Therefore, the answer to the missing detail in your statement is statement number 3. They all supported each thought with the Heliocentric theory.