Satellites and Space

5. A satellite that has not been made by humans.(two words with under score)
6. A space probe that lands on a planet or moon.
7. The amount of force with which gravity pulls something towards the Earth. It is measured in newtons (N).
8. The path that a planet takes around a star, or the path that a moon or satellite takes around a planet.
10. A large object orbiting a star.
11. Oval shaped. The shape of a planet's orbit around the Sun.
13. An unmanned spacecraft that has cameras and other equipment to find out about other planets.(two words with under score)
16. A satellite made by humans.(two words with under score)
17. A space probe that goes into orbit around a planet or moon.
18. A huge ball of gas that gives out heat and light energy.
19. A star with planets and other objects orbiting it.(two words with under score)

1. The unit of force.
2. The family of waves that includes light, infrared, microwaves and radio waves(two words with under score)
3. Another name for heat energy that travels by radiation. It can travel through transparent things and a vacuum (empty space).(two words with under space)
4. The force of attraction between any two objects.
9. 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.(two words with under score)
12. All the galaxies and the space between them.
14. Millions of stars grouped together.
15. The part of the electromagnetic spectrum that we can detect with our eyes.(two words with under score)
19. Anything that orbits a planet or a moon.