Topics of this game:
- What is the main reason that NASA invented the space shuttle?
- When astronauts spend long periods of time in space, they must
- The place in space where astronauts can live for long period of time is called the
- Early space travel used space capsules, the biggest drawback to the capsule was that it
- How many stars are in our solar system
- The reason the planets orbit the sun is because
- All the planets in our solar system orbit the sun in
- The inner planets are
- The outer planets are
- The force that pulls all objects in space together is called
- True or False: The more mass an object has, the more gravity it will have
- The most massive object in our solar system with the most gravitational pull is
