Space Crossword

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Across
  1. 3. The bright "tail" of this icy object appears as it approaches the Sun.
  2. 5. A rocky body orbiting the Sun, smaller than a planet.
  3. 7. The first man-made satellite sent into space.
  4. 8. The force that keeps planets in orbit around stars.
  5. 9. The galaxy that contains our solar system.
Down
  1. 1. The largest moon of Jupiter.
  2. 2. The imaginary line that passes through a planet's poles, which it rotates around.
  3. 4. The smallest planet in the solar system.
  4. 6. A unit of distance used to measure vast space distances.