Across
- 2. a natural satellite which orbits the Earth or any other planet.
- 4. the third largest planet in the Solar System and seventh planet from the Sun.
- 6. Closest planet to the sun.
- 7. Third planet from the sun.
- 10. A giant ball of hot gas and plasma that generates huge amounts of energy through nuclear fusion.
- 13. The path a celestial object takes around a star or planet.
- 14. An envelope of gases that surround a planet.
- 15. A huge explosion caused when a star collapses on itself.
Down
- 1. The hotest planet in the solar system.
- 3. A large group of stars, dust, gas and dark matter held together by gravity.
- 5. An instrument used to view objects in outer space.
- 8. A person who is specially trained to travel into outer space.
- 9. The largest planet in our solar system.
- 11. Way The galaxy that contains the Solar System.
- 12. A meteoroid that has entered the Earth's atmosphere is called