15.95 for 60+, here is the link with the info https://www.sfsciencecenter.org/plan-your-visit
You could probably find this information on their webpage. Sorry I don't have the answer, but My mom who is a senior and I went in for free thanks to the Bank of America Museum on Us program. If you have a Bank of America account you could show your ATM or credit card with an ID the first weekend of the month and get in for free.
15.95 60 and up
And if you work for health care, it will be cheaper
For seniors 60+ is 15.95
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