Space - Hard

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Across
  1. 3. A very famous astronomer - begins with 'G'
  2. 5. The first female astronomer
  3. 6. The Roman God of War.
  4. 9. The name of the first spacecraft to be launched.
  5. 10. The sun keeps burning ..... to keep alive.
Down
  1. 1. The number of planets in our solar system.
  2. 2. The last name of a man made famous for: 'That's one small step for man, one giant leap for mankind.'
  3. 4. The obscuring of light by a Celestial Body.
  4. 7. "I didn't feel like a .... , I felt very, very small"
  5. 8. The hottest Planet in our solar system.