Astronomy Cross Word

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Across
  1. 7. Planets travel around the sun in what shape?
  2. 11. The tendency of an object to resist any change in its motion.
  3. 12. The force that pulls objects toward each other.
  4. 14. Our galaxy
  5. 16. The movement of an object around another object.
  6. 17. All of space and everything in it.
  7. 18. An object in space that revolves around a star.
  8. 20. One of the small asteroid-like bodies that formed the building blocks of the planets.
  9. 22. The lowest possible temperature
  10. 23. The most visible planet we see at night.
  11. 24. When the Moon is more than half full.
  12. 25. A huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity.
Down
  1. 1. A model of the universe in which Earth is at the center of the revolving planets and stars.
  2. 2. Change in the shape of the moon.
  3. 3. An enormously bright, distant galaxy with a giant black hole at its center.
  4. 4. The star that provides light for the Earth
  5. 5. The apparent change in position of an object when seen from different places.
  6. 6. The initial explosion that resulted in the formation and expansion of the universe.
  7. 8. When the moon’s shadow falls upon Earth.
  8. 9. The spinning motion of a planet on its axis.
  9. 10. The distance that light travels in one year
  10. 13. Matter that does not give off electromagnetic radiation
  11. 15. A model of the solar system in which Earth and the other planets revolve around the sun.
  12. 19. The study of the moon, stars, and other objects in space.
  13. 21. The observation that the farther away a galaxy is, the faster it is moving away.