Across
- 2. Moon that is larger than Mercury, and Titan
- 5. The study of chemicals in space
- 7. A group of stars
- 8. Heated electromagnetic gas
- 12. The star with 7 Earth sized planets
- 13. Relating to the sun
- 16. Going to collide with the Milky Way
- 17. The study of life
- 19. Latin for gold
- 20. The form of static electricity in clouds
Down
- 1. Includes Lutetium
- 3. Argentum
- 4. Seventh planet
- 5. Third Noble gas
- 6. Reddest object in the solar system
- 9. NASA sent these missions to the moon
- 10. The study of weather
- 11. A star; biggest in the Orion
- 14. Includes chlorine and and iodine
- 15. Aurorae at poles, not Jupiter or Earth
- 18. Radioactive noble gas