Across
- 6. the speed you need to get to to get out of earths gravity
- 10. year pluto was discovered
- 13. average temperature on earth
Down
- 1. name of the spacecraft that visited the moon in 1969
- 2. name of the galaxy we are in
- 3. year the ISS first had astronauts on it
- 4. the planet we live on
- 5. largest moon in the solar system
- 7. second largest planet
- 8. smallest moon in the solar system
- 9. the planet that was discovered in 1849
- 11. the first planet from the sun
- 12. number of planets in the solar system