Adding to Carla's answer, seniors 65-plus are $14. There are a few special rates like military, too.
If you have a family that may visit regularly it would be good to get a family membership for $109 or for large families 7+ the family plus membership is $159. We had everyone chip in to make it cost effective and made two separate people from different households the primary 2 members. Lots of cool exhibits and lunch there is reasonable. Three of us ate there for $20
basic admission with plenty to fill a day (no special exhibits, no imax) is $17 for adults and $12 for kids over 3 (under 3 is free)
Thanks! Your answer is awaiting moderation.