Across
- 2. To send a rocket or spacecraft into space. Man's best friend
- 4. A journey carried out to achieve a scientific goal.
- 5. A vehicle designed to travel beyond Earth's atmosphere.
- 7. To investigate or travel somewhere to learn more about it.
- 10. A person trained to travel and work in space.
Down
- 1. The layer of gases surrounding a planet.
- 3. Everything that exists, including all stars, galaxies and planets.
- 6. The force that pulls objects towards one another.
- 8. The path followed by a planet or spacecraft around another object.
- 9. A huge collection of stars, planets and other objects in space.