Marius's Space Crossword

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Across
  1. 2. of the moon The periods of the lunar cycle, shown by changes in the shapes of the Earth.
  2. 5. All existing matter, energy and space.
  3. 7. The path of one object going around another object in space.
Down
  1. 1. A ball of gas giving out energy in the form of heat and light.
  2. 3. When the moon blocks the sun or the moon is in the shadow of the earth.
  3. 4. A large spherical object that orbits a star.
  4. 6. A 3d ball that orbits around bigger planets