Investigation 5: Craters & Investigation 6: Beyond the Moon

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Across
  1. 4. sticking together
  2. 5. large, icy, rare objects from the outer reaches of the solar system
  3. 7. radius the average distance between an object and the object it is orbiting
  4. 11. a crater that has central peaks and ejecta thrown out in long rays
  5. 12. an enormous collection of tens of millions to hundreds of billions of stars, interstellar gas, and dust
  6. 14. the crash between one object and another
  7. 15. a small, bowl-shaped crater that has fairly uniform blanket of ejecta distributed around the rim
  8. 17. impact sites
  9. 19. lunar soil
Down
  1. 1. a cloud of gas and dust in space between stars
  2. 2. a crater from a large impact that filled with magma from beneath the surface
  3. 3. the average distance between Earth and the Sun, about 150 million km
  4. 6. the distance light travels in one year, about 9.5 trillion km
  5. 8. a region of space occupied by a system of objects orbiting a star
  6. 9. a small-or medium-sized piece of rock or metal from space
  7. 10. the sum total of all things that can be observed or detected
  8. 13. large, rocky or metallic objects from within the solar system
  9. 16. a force of attraction between masses
  10. 18. the material displaced from the land when a crater is formed