| Satellite |
| Satellite: an object which orbits planets or stars |
| Types of satellite orbits |
| Specific positions of satellites in the orbits |
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| Relationship between orbital height and satellite velocity |
- The higher the orbital height of a satellite, the lower the satellite speed for it to remain in orbit
- This is because the gravitational force on a satellite decreases when the orbital height of the satellite increases
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| Methods of sending launch vehicles into orbit |
- Launch vehicles: used to send satellites or spacecraft into outer space
- Expendable launch vehicle (ELV)
- Reusable launch vehicle (RLV)
- Ways to send launch vehicles into orbit:
- Directly into orbit
- Hohmann transfer orbit
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| Zero gravity |
| The condition when no significant gravitational force effect is felt |
| Impact of rapid development in space technology |
- Increased waste in space / space junk
- Increase in research and development activities
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