Across
- 4. only planet with life
- 5. a person who is trained to travel in spacecraft
- 8. furthest planet from the sun
- 9. smaller than comet or asteroid
- 12. hottest and cloudy planet
- 14. coldest planet
Down
- 1. planet with brightest rings
- 2. small objects mostly made of ice
- 3. a celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classed as such.
- 6. biggest planet in solar system
- 7. Neil Armstrong first human to step on ___
- 9. red planet;humans have sent robot here
- 10. number of planets in solar system
- 11. first planet in solar system
- 13. biggest star