Uh, have you heard about Astronomy at all? Admittedly it's purely observational measurements, but you'd need a very poor philosophy of science to deny that the

Uh, have you heard about Astronomy at all? Admittedly it's purely observational measurements, but you'd need a very poor philosophy of science to deny that the careful measurement of radiation is not an experiment. As for trials, the universe itself has provided billions upon billions of different objects to perform measurements on.