| Term | Definition |
|---|
| Lunar Eclipse | An occasion when Earth is directly between the sun and the moon, casting a shadow on the moon |
| Meteor | A piece of rock or metal that burns very brightly when it enters Earth's atmosphere from space |
| Orbit | The path of the planetary body around the sun |
| Orienteering | Using the stars and tools that interpret the stars for navigation |
| Rockets | Vehicles powered by a rocket engine |
| Rotation | Planetary spinning motion |
| Satellite | A smaller celestial body orbiting around a larger body; a moon |
| Solar Eclipse | An occasion when the moon is directly between the Earth and the sun, and casts a shadow on Earth |
| Solar System | The components of a galaxy |
| Space Shuttle | Manned spacecraft used for Exploration |
| Star | A celestial body made of gases, that generates nuclear energy at its core |
| Surface Gravity | The amount of attraction a planet or moon has for another object on its surface. The size and mass of a planet determine the strength of attraction |
| Universe | All the matter, energy and space that exists. |
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