Tellus Science Museum is a natural history and science museum near Cartersville, Georgia, United States, with a facility of over 120,000 square feet. It is an affiliate of the Smithsonian Institution. The museum is open daily from 10:00 AM to 5:00 PM, closing only on major holidays. Entrance fees vary. The museum holds multiple special events throughout the year, many revolving around the Bentley Planetarium and observatory facility.