If a scientific field is defined as one that follows the [scientific method](https://i.stack.imgur.com/OhLBb.png), then it needs to have reproducible experiments. But this is not possible in cosmology and astronomy, because how can one test star formation in a lab? In these fields, one just simply observes nature and accepts whatever it gives you, and then one formulates conclusions based off of their observations.

So are these non-scientific fields because there is no experimentation?