Intro to Astronomy

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Across
  1. 4. The large space rock orbiting out past Neptune that used to be considered a planet
  2. 7. Star at the center of our solar system
  3. 9. The seventh planet from the sun
  4. 10. First person to use a telescope to explore space
  5. 13. One of the first scientists to believe that the planets revolve around the sun
  6. 15. Planet that we live on
  7. 16. Planet closest to the sun
  8. 17. Force that keeps the various planets and stars in place and pulls objects together
  9. 18. Planet that is known for its rings
Down
  1. 1. Something that orbits around something else
  2. 2. The planet farthest from the sun in our solar system
  3. 3. The super hot planet between Mercury and Earth
  4. 5. Technology that Galileo used to explore space
  5. 6. Study of the stars
  6. 8. The largest planet in our solar system
  7. 11. Known as the "red planet," the planet that humans are most likely to be able to visit
  8. 12. The galaxy that holds our solar system
  9. 14. The sun is a _______________.
  10. 16. The natural satellite that orbits around Earth