There is a Snoopy in Space Museum Kit available that contains Astronaut Snoopy comic strips, a history of Peanuts and NASA, coloring sheets, art assets - poses of the characters and props, art rules and guidelines, and a vendor list to source Peanuts products.
To start the process of obtaining these materials for your museum or planetarium, just send an email to email@example.com!
Peanuts Worldwide LLC is rather serious about their intellectual property, so I don't think I have permission to put a cute picture of Peanuts characters here. So instead, here's a nice picture of Snoopy coming back to Charlie Brown!!!