Space Crossword Puzzle

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Across
  1. 2. The amount of matter something has
  2. 8. The north star
  3. 9. A commet that only becomes visible every 75 years
  4. 10. First man made object to leave our solar system
  5. 14. The first element on the periodic table
  6. 15. The largest moon in the solar sytem, this moons surface is mostly liquid water and methane.
  7. 16. The galaxy our solar system is in
  8. 18. A research facility floating in L.E.O
  9. 19. A group of stars
  10. 24. The distance light travels in one earth year
  11. 25. A celestial body with enough gravity to suck in light
  12. 27. A cluster of millions of solar systems
  13. 28. The name of the largest and most prestigious space telescope
Down
  1. 1. The smallest planet in the goldilocks zone of our solar system
  2. 3. biggest Proxima the proxima Centauri star system, the closest star system to ours
  3. 4. A force dependand on distance and mass
  4. 5. Newton's 1st law of motion
  5. 6. The time it takes the I.S.S to orbit Earth
  6. 7. A congregation of rock and rubble, separating the inner and outer solar system
  7. 11. the first confirmed interstellar object to pass through our solar system
  8. 12. Closest spiral galaxy to the milky way
  9. 13. a burning ball of gas in space, mainly helium and Hydrogen
  10. 17. A object that orbits a celestial mass
  11. 20. A area with high concentrations of rock and gas that will eventualy form a star
  12. 21. one of the only objects to come from interstellar space. It is being tracket currently and is thought to be a Alien craft
  13. 22. The Earth---- Around the sun
  14. 23. A celestial object that orbits a star and can have its own satalites
  15. 26. The human species home planet