I think that Thomas Kuhn would disagree.
The scientific community works within paradigms which adequately explain their experiments. There may be some weird results, but as long as they remain few, new scientists will remain convinced of the paradigm's merits. The areas of weird results are the most interesting, and attract attention and further exploration.
When the weird results multiply after further investigation, ad hoc modifications to the theories of the paradigm might be necessary. This might work for a while, satisfying the scientists' need to explain their results.
However, ad hoc changes may push the paradigm to its limits. Crisis occurs within the scientific community. Scientists may start to abandon core tenets of the paradigm in search for new theories which are better at explaining all the weird results. The paradigm might be so ingrained into the world-view of its scientists that only young scientists who are yet to be indoctrinated might be able to see past it.
The famous examples are of relativity, quantum physics, and heliocentrism. Ptolemaic geocentrism, particularly, had a lot of ad hoc modifications to explain the loopy movement of planets.
In this sense, scientific ideas are certainly retired. More can be found at https://en.wikipedia.org/wiki/Superseded_scientific_theories
If someone understands Kuhn and philosophy of science better than me, please correct me. I know that Imre Lakatos and Paul Feyerabend have different views on "scientific progress", but Thomas Kuhn is the only one I have read on this topic.