The lightest (and one of the oldest) stars ever found has blown a hole in accepted star creation theory, because it is comprised of almost nothing but helium and hydrogen, with none of the heavier elements that one would expect to find after the millenia of fusion that had taken place.
According to the current theory, this star should have never formed, because the gravity that it possessed at the time it was a cloud of materials was too little for those materials to accrete into the tight mass needed to start the fusion reaction.
So, as it has been so many times before, science was wrong. Now scientists shall revisit the evidence, polish, and return with a better theory. Ah, progress.