Go There and Go There Often
The Museum of Science Boston is one the best science museums that I have been to visit, and I have visited many. There is a lot of variety. There are interactive exhibits, live animal exhibits, presentations, movies, etc. It is large, and while having many visitors, it never feels over-crowded. The staff is very helpful, and always pleasant.
The MOS offers both fun and education in one visit. It is a great place to go as an adult, to take children, and to take out-of-town visitors. There are even areas for young children. It is definitely worth the time and money to go there. Because, they offer so much, and are always adding something, you should go there often. I highly recommend it.