stars

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Across
  1. 4. a force caused by planetary mass that drives other objects towards the center of its mass
  2. 5. a region in spacetime with such high gravity that nothing can escape including light
  3. 7. an aircraft launched in 1997 by NASA
  4. 9. a man made object that orbits a planet or star
  5. 12. a telescope launched by NASA that helps us see nearby planets and stars and planets
  6. 13. the force an object has that resits any change in motion
  7. 15. an element on the periodic table
  8. 20. a man made object that orbits earth and is able to house a crew of seven
  9. 21. the curved path an object follows due to gravity
Down
  1. 1. a system of stars with remnants of gas dust and dark matter bound together
  2. 2. the name of a spiral Galaxy that contains our solar system
  3. 3. a pattern of stars that appear to form an imaginary shape
  4. 6. a cloud of gas and dust in space
  5. 8. equal 1.5 hours
  6. 10. a measurement of distance meaning it takes a year for light to travel one light year
  7. 11. a star that indicates the north also a very bright star
  8. 14. a orbiting celestial body of mass with a way to make energy
  9. 16. a planet inhabited by humans with an orbiting moon
  10. 17. a triple star system located 4.37 light years away
  11. 18. the amount of matter in an object
  12. 19. a constellation