Across
- 1. Earth's Energy Source
- 3. Planet with extensive ring system
- 4. Dwarf Planet
- 6. This is lost with time in outer space
- 9. Planet closest to the Sun
- 10. The Red Planet
- 13. Time it takes for the ISS to orbit Earth
- 15. ISS Energy collector
- 16. 2018 NASA Mars Lander
- 17. Seed Germinating Experiment
- 18. These shrink with time in outer space
Down
- 1. Distant sun
- 2. Robotic Arm on the ISS
- 5. Planet Path
- 7. The last gas giant
- 8. Symptoms include nausea and dizziness
- 11. The Man Who Tweeted Earth
- 12. The largest planet
- 14. A Russian Astronaut
- 19. Water World