You can see this with the Higgs Boson particle, which had been theoretically predicted, but needed to be tested via various experiments. These initial tests appear to confirm the prediction, but this is just the beginning. More tests are now beginning, 'more data is required', as the phrase goes, and eventually other groups of scientists will probably attempt replication, so long as the equipment can be built. Results are then written up, and published via peer review, and are open to debate and criticism. It's a long, arduous and magnificent process.