space

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Across
  1. 3. A manmade space probe that has traveled a distance of a lot
  2. 6. a man-made satellite that all spacefaring countries have joined together
  3. 7. an objects amount of matter
  4. 8. Atomic number 1
  5. 11. a planet that harbors the only discovered life
  6. 13. space cloud
  7. 14. the bright star in the sky
  8. 16. an object's resistance to motion
  9. 17. a celestial object that's gravity is so strong it pulls in everything including light
  10. 18. weight x acceleration of gravity
  11. 21. the amount of time it takes light to travel
Down
  1. 1. the ISS orbits the earth in ____
  2. 2. a grouping of stars that have been said to show pictures
  3. 4. a belt of asteroids around our system
  4. 5. another galaxy
  5. 8. a telescope that allowed us to view further than ever before
  6. 9. the moon is an example of earths _____
  7. 10. our galaxy
  8. 12. the closest star
  9. 15. when one celestial object goes around in a circular motion
  10. 18. a grouping of hundreds of thousands of systems
  11. 19. a celestial object made of solid objects usually spherical
  12. 20. big bright in the sky