That is exactly how scientific discoveries are made, we have a theory, do an experiment. Some prove our theory some do not.
The word "Prove" is where this statement deviates away from Science. Experiments are not performed to "prove" a theory, they are deliberate attempts to falsify that theory. Theories that survive the gauntlet and make useful statements about natural phenomena are accepted and continue to be used--only while they remain unfalsified and continue to make useful statements. When experiments falsify the theory, when it fails to make accurate statements about natural phenomena, then it must change: be corrected, expanded, restricted in scope, sometimes abandoned.
This distinction between "prove" and "falsify" is no minor detail. Scientific rigor, scientific progress is firmly rooted in the humility to say "I must continue to test the theories I accept, because they could be just as flawed as the ones that came before them." The hubris of believing any theory is The Answer, that it is The Truth, is the death of honest science. That is how investigators become blind slaves of their preconceptions. That is when theories wander down blind alleys of increasing absurdity, trying to preserve the "Truth" of a favored (erroneous) concept: for example, planetary motion in epicycles, or the static eternal universe.
The phrase "settled science" is an oxymoron: genuine science is, by definition, always subject to revision. When a theory becomes sacrosanct, it is no longer scientific.