Across
- 3. The force of gravity pulling on you
- 7. A satellite used to transmit TV programmes or telephone calls
- 12. A space probe the lands on a planet or moon
- 13. A large object orbiting a star
- 15. Millions of stars grouped together
- 16. A star with planets and other objects orbiting it
- 17. A space probe that goes into orbit around a planet or a moon
- 18. Anything that orbits a planet
- 19. An optical instrument designed to make distant objects appear nearer
Down
- 1. The unit of force
- 2. Any two objects are near each other they exert a tiny force that tries to pull them together
- 4. An unmanned spacecraft designed to explore the solar system and transmit data back to earth
- 5. An orbit where a satellite is over the equator and takes exactly 24 hours to circle the Earth, so it always stays over the same part of the Earth
- 6. light The part of the electromagnetic spectrum that we can detect with our eyes
- 8. The Moon is this
- 9. A satellite made by humans
- 10. The shape of a planet's orbit around the Sun
- 11. The Sun is this
- 14. All the galaxies and the space between them
- 20. When a planet goes around the sun