Full star lost due to price-to-time-spent ratio being way off. Without an IMAX visit the $50 entry for a family of 3 feels unreasonably high.
We've been to a ton of kids museums across the country with our 5 year old daughter. This one has pretty standard fair for this type of place, although I felt like it was a bit small and sparce, most of the footprint of the building was taken up by theatre space (IMAX and another 3D one). There were a few good shows/presentations while we were there but not as many as I would have liked to see (by show I mean a staff member talking about some science thing for kids to learn more about and explore). The natural exhibits especially could have benefited from this sort of interactive staff feature.
All in all my daughter had a good time.