I'm pretty sure that tomorrow (Monday) at Explora is free admission. It'll probably get crowded, although with the kids back in school, maybe not. I also think (but call to double check, or maybe someone else can confirm) that it opens an hour early for families with a toddler (older siblings also welcome).
Thank you for sharing this! We do not have much on our calendar this week and this will be a perfect, yet cheap way to get out of the house and do something both fun and educational. I appreciate it! Maybe we will see you there.