What context can I use each word in?
Learn when and how to use these words with these examples!
orrery
Example
The orrery in the science museum was fascinating to watch. [orrery: noun]
Example
The professor used the orrery to explain the movement of the planets around the sun. [orrery: noun]
planetarium
Example
We went to the planetarium to watch the show about the constellations. [planetarium: noun]
Example
The planetarium guide explained the different types of galaxies in the universe. [planetarium: noun]
Good things to know
Which word is more common?
Planetarium is more commonly used than orrery in everyday language. Planetariums are popular attractions for science enthusiasts and students, while orreries are less common and mainly used for scientific research and study.
What’s the difference in the tone of formality between orrery and planetarium?
Both orrery and planetarium are formal words that are mainly used in scientific and educational contexts. However, planetarium is more versatile and can be used in both formal and informal contexts, while orrery is less common and mainly used in formal settings.
