Space Center Houston is a unique and exciting attraction that offers visitors the opportunity to learn more about the history and future of space exploration. To fully explore and experience all of the exhibits and activities, you should plan to spend at least half a day at the center. You can easily spend several hours touring the Space Center, attending lectures and shows, and participating in interactive exhibits. However, it is important to note that the length of your visit to Space Center Houston will depend on your personal interests and the number of visitors on the day of your visit.