I think the phrase is fine since according to our best models of galaxy formation these galaxies should not be able to exist and yet they do. As such we don't u

I think the phrase is fine since according to our best models of galaxy formation these galaxies should not be able to exist and yet they do. As such we don't understand how these galaxies can exist and need to do more research to come up with better models that can explain the existence of these galaxies.