A M.
Yelp
It's definitely more of a kids' museum than a science museum, but a really nice one! The entire first floor is for younger kids (they say 8 and under; I would say 5 and under). Compared to our kids museum at home they have SO much! There's an incredible water play area, a UPS truck (complete with packages for the kids to "deliver"), an air tube system that kids can shoot scarves through, and a roller coaster design area, as well as all the standard preschool toys (Kaboom blocks, pretend play areas, book nooks, climbing structure) and a dedicated area just for babies and toddlers with toys and stuffed animals.
They say the second floor is for ages 5 & up, but my almost 2 year found plenty to enjoy there, including the various building toys (MagnaTile, K'nex, etc.), the wind tunnel and the "mummy" room with taxidermied animals (including an alligator and polar bear!). There are also a few rooms with a more science-y focus, including a room on space and a room about weather and water treatment.
I do agree with the criticisms that the video and computer interfaces are out of date - like early 1990s era - but fortunately there aren't too many of those. And the third floor seemed weirdly sparse, almost like they had recently torn down an exhibit and weren't sure what to put in next. There was a "personality" exhibit where you could fill in the blank on "I am ___" and add them to a wall (sounds silly, but some of the responses were amusing) and a display where you could see the stages of embryonic/fetal development, but those were about the only things worth seeing on that floor and there was a lot of empty, open space.
It's free for ASTC museum members, which was amazing for us - we went every day of our Louisville trip and our toddler was in heaven and never wanted to leave. Regular admission is a bit steep at $17 for adults, but kids are $13 and kids under 3 are free. The museum store is nice (ASTC members get a 10% discount on all purchases) and I appreciated that you aren't forced to walk through it on your way out.