Earth in Space

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Across
  1. 2. A man made object placed into the orbit of another planet
  2. 4. The study of the things in the universe e.g. stars, planets
  3. 7. The third closest planet to the Sun
  4. 8. A non-contact force that attracts things to the centre of Earth and other planets
Down
  1. 1. Move in a circular orbit
  2. 3. The study celestial bodies having an impact on us and our actions
  3. 5. Move or to cause to move an object in a circle
  4. 6. The repeated path a planet or spacecraft takes