Across
- 2. small rocky object that orbit the Sun
- 4. round object that orbit the Sun
- 6. instrument that allows people to see distant objects
- 8. extraterrestrial life-form, or a being from another planet
- 9. the whole mass of air that surrounds the Earth
- 12. anything in the sky that cannot be explained y the person who sees it
- 13. the third planet from the Sun and the fifth largest planet of the Solar System. It is currently the only known location where life is present
Down
- 1. the Sun and all the objects that orbit around it
- 3. moon, planet or machine that orbits a planet or star
- 5. person who is specially trained to travel into outer space
- 7. huge collection of gas, dust, and billions of stars and their solar system
- 10. tall, thin, round vehicle
- 11. large object made of dust and ice that orbit the Sun