“Science” has not yet happened with one experiment.
At a minimum, the first experiment’s result has to be “replicated” by another experiment done exactly the same way but by another independent group of people.
Today there is worldwide rough agreement that 20 additional independent experiments must be run and 19 of those experiments must agree with the original experiment. This is the 19 of 20 “confidence level” or 19/20 times 100% = 95% confidence
