Across
- 3. The path that a planet takes around a star.
- 6. An orbit where a satellite is over the equator and takes 24 hours to circle the Earth.
- 8. The amount of matter that something is made of.
- 12. A unit of force
- 13. A space probe that lands on a planet or moon.
- 14. An orbit where satellites passes over the North and South Poles.
- 15. An unmanned spacecraft that has cameras to find out about other planets.
- 17. Millions of stars grouped together.
- 18. Planets move in this shape of orbit around the sun.
- 19. A satellite made by humans.
Down
- 1. A space probe that goes into orbit around a planet or moon.
- 2. A satellite used to transmit TV programmes or telephone-calls.
- 4. The amount of force in which the gravity pulls everything towards the Earth.
- 5. A seat with planets the others objects orbiting it.
- 7. A huge ball of gas that gives out heat and light energy.
- 9. Another name for heat energy that travels by radiation.
- 10. All the galaxies and the space between them.
- 11. A large object orbiting a star. Example; Earth.
- 16. Force of attraction between any two objects.
- 20. Anything that orbits a planet