Across
- 5. A celestial body moving in an elliptical orbit around a star
- 7. A celestial object consisting of a nucleus of ice and dust
- 8. An artificial body placed in orbit around the earth or moon
- 9. A person trained to travel in a spacecraft
- 10. A small body of matter from outer space that enters Earth's atmosphere
Down
- 1. A vehicle designed to propel itself by ejecting exhaust gas from one end
- 2. A system of millions or billions of stars
- 3. The path of a celestial object around a star planet or moon
- 4. A giant cloud of dust and gas in space
- 6. An optical instrument designed to make distant objects appear nearer