Of course, scientists get excited sbout proving idess wrong by ADDING to them, but this in no way means we live in a workd now where the knowledge science brings us csn be possibly burned on a fire as totally untrue, such ss the idea of blood letting or believing the esrth is flat.
Simply put, all modern scientific ideas are based on evidence, hard real, factual evidence. The new ideas in science that change old ideas comes from new addition evidence that puts the older evidence in context. So our ideas progress, but been as the old evidence is just as legitimate as the new, our ideas don't change wildly.
see it as a jigsaw, evidence is a jigsaw piece. What we think the picture is may change the more pieces we find, but the oldest pieces we find are still pieces. Compare that to days before science, where we just made shit up, ignoring the jigsaw pieces for what we wanted the picture to be or for what we were told the picture was.
evolution is a great example as we have 150 years of evidence. New evidence chsnges dstes, it changes tne order of how we thought things were done, it adds to ideas about what happened where and when. But there is no evidence out there that can dismiss the millions and millions of pieces of evidence for evolution.
Physics is an exciting region of science right now, because we are only just entering a stage where we have the technology to really grab real evidence for theories, so it is an exciting time snd specialitu for scientists. They are moving from thought experiments snd maths to real science. We will lesrn a lit sbout the universe in the next few hundred years for sure. Again, evidence they find is evidence, it csn't be un-found. So even though they may find more evidence that changes the jigsaw apperance, the pieces they find now are still part of the picture.