Across
- 4. The layer of air and different gases that surrounds a planet. (10 letters)
- 5. Something that is located or happens between the stars. (12 letters)
- 7. "A large, rocky object that flies through space. (8 letters)"
- 8. A massive and bright explosion of a dying star. (9 letters)
- 10. "Everything that exists—all of space, time, stars, and galaxies. (8 letters)"
Down
- 1. A signal or message sent through space to Earth. (12 letters)
- 2. Man-made objects that circle Earth to send TV or phone signals. (10 letters)
- 3. A person who is trained to work and travel in space. (9 letters)
- 6. Scattered pieces of broken rock or metal floating in space. (6 letters)
- 9. The action of moving in a circle or curve around a planet or star. (8 letters)