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An orrery (/ˈɒr.ə.ri/ ⓘ) is a mechanical model of the Solar System that illustrates or predicts the relative positions and motions of the planets and moons, usually according to the heliocentric model. It may also represent the relative sizes of these bodies; however, since accurate scaling is often not practical due to the actual large ratio…
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planets sun earth moon orreries planetarium model around mechanical first built show planetary john moons one mercury system also jupiter
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Orrery | is a | planetarium in both senses of the word | 0.90 | text |
| Aristarchus of Samos had proposed a heliocentric universe | instance of | He observed that some Greek philosophers | 0.80 | text |
| Orrery | related to External links | The | 0.60 | section |
| Orrery | related to External links | Grand' Orrery | 0.60 | section |
| Orrery | related to External links | Whipple Museum | 0.60 | section |
| Orrery | related to External links | History | 0.60 | section |
| Orrery | related to External links | Science | 0.60 | section |
| Orrery | related to External links | University | 0.60 | section |
| Orrery | related to External links | Cambridge | 0.60 | section |
| Orrery | related to External links | EnglandJPL Solar System SimulatorLong | 0.60 | section |
| Orrery | related to External links | Now Foundation OrreryUniversity | 0.60 | section |
| Orrery | related to External links | Pennsylvania OrreryElectric Orrery | 0.60 | section |
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