Across
- 4. - A meteoroid that survives Earth's atmosphere.
- 7. - A group of stars forming a pattern.
- 8. - A Russian astronaut.
- 13. Station - A habitable structure in space.
- 15. - A vehicle designed for travel in space.
- 17. - Occurring between stars or within space.
- 19. - A prominent constellation in the night sky.
- 20. - Originating from outside Earth.
Down
- 1. - The Hubble Space Telescope.
- 2. - A massive explosion of a star.
- 3. - A reusable spacecraft for transportation to and from space.
- 5. - The obscuring of one celestial body by another.
- 6. - All of space and its contents.
- 9. - An instrument for viewing distant objects.
- 10. - The force that keeps celestial bodies in orbit.
- 11. - Natural light displays in the polar regions.
- 12. - The distance light travels in a year.
- 14. - The study of life in the universe.
- 16. - A highly energetic and distant celestial object.
- 18. - The second planet from the Sun.