Are We Alone?
Across
- 3. All living and existing things.
- 4. Any life outside of earth.
- 6. A celestial body moving around the earth.
- 7. A mysterious object seen in the sky by people.
- 8. A place outside earth that has lots of galaxies, planets, and stars.
- 10. A creature who is known to look like E.T.
- 11. A group of people who try to research new things.
- 15. To look for new things.
- 16. The action of communicating something.
- 17. To find or see first.
- 18. A radio wave received and transmitted.
Down
- 1. A huge piece of rock that flew from the atmosphere.
- 2. A instrument for viewing distant objects.
- 5. A scientist who studies planets and stars.
- 7. All existing matter in space.
- 9. To see something up high.
- 10. A layer of gas above the earth.
- 12. An astronomical-like object made of plasma.
- 13. Systems of billions of stars with gas, rocks, and gravity.
- 14. Something that moves.