Karl Popper`s greatest contribution to science was his theory of falsification, which distinguished between scientific and non-scientific theories. He suggested that scientific theories have potential falsifiers, while non-scientific theories lack them. For example: "Is there life in space?" According to Karl Popper, a theory like this is an invalid assumption, because even if it is not clear, it is necessary to check all the planets in space to find out if it is incorrect.
Karl Popper has a very important place in the world of Bilimsel Arastirma with this rule.