Space

1234567891011121314151617181920
Across
  1. 4. A planet which we live in
  2. 6. Almost the exact same size as Pluto
  3. 7. Other name for "outer planets"
  4. 10. A planet closest to the Sun
  5. 12. A system of millions or billions of stars
  6. 16. The biggest planet in our solar system
  7. 17. Has 8 main rings
  8. 18. The study of everything in the universe beyond Earth's atmosphere
  9. 19. Brightest planet in the solar system and is named after ancient Rome goddess
  10. 20. An invisible force that pulls objects toward each other
Down
  1. 1. A place in space where gravity pulls so much that even light can not get out
  2. 2. Other names for the "inner planets"
  3. 3. The coldest planet in our solar system
  4. 5. The star around which the earth moves and that provides light and heat for the earth
  5. 8. A vehicle that is designed to fly in outer space and operate there
  6. 9. The first planet from the sun and the smallest in our solar system
  7. 11. Planet that used to be part of the solar system
  8. 13. Space matter that has entered Earth's atmosphere
  9. 14. The brightest and largest object in our night sky
  10. 15. All existing matter and space considered as a whole