Satellites and Space

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Across
  1. 3. The path a planet takes around a star, or the path that a moon or satellite takes around a planet
  2. 5. The family of waves that includes light, infrared, microwaves and radiowaves
  3. 11. An orbit where the satellite is over the equator and takes exactly 24 hours to circle the Earth so it is always stays over the same part
  4. 12. The amount of matter something is made out of
  5. 13. A huge ball of gas that gives out heat and light energy
  6. 14. An orbit where a satellite passes over the North and South Poles. It will pass over all parts of the Earth in several orbits
  7. 16. A star with planets and other objects orbiting it
  8. 17. A large object orbiting a star
  9. 18. This planet was first thought to be the centre of the Solar System
  10. 19. He made the first detailed observations of the Solar System with in a telescope in 1610
Down
  1. 1. An unmanned spacecraft that has cameras and other equipment to find out about other planets
  2. 2. Anything that orbits a planet or a moon
  3. 4. A satellite made by humans
  4. 6. All the galaxies and space between them
  5. 7. The unit of force
  6. 8. Oval shape of a planet's orbit around the Sun
  7. 9. He suggested that the planets moved in ellipses, not circles
  8. 10. Millions of stars grouped together
  9. 11. The force of attraction between any two objects
  10. 15. A space probe that goes into orbit around a planet or moon