Across
- 3. This is a vehicle designed to propel itself by ejecting exhaust gas from one end
- 6. In 365 days, Earth completes a full journey around the sun
- 9. Earth completes a full turn in 24 hours.
- 10. This is an uncrewed spacecraft sent from Earth to explore objects in space.
- 12. This is the number of planets in the solar system.
- 14. This refers to anything related to the moon.
- 15. Orbiting objects made of gas, dust, and ice.
Down
- 1. This enables astronomers to observe many more stars than they could with their own eyes
- 2. Small rocky objects orbit the sun.
- 4. A distance equal to about 150 million km.
- 5. Many of the objects, including planets, travel around the sun
- 7. The four planets farthest from the sun.
- 8. Any small object that orbits a larger object is this
- 11. Structure in space is made of gas in which nuclear fusion reactions occur.
- 13. The closest planet to the sun