Aether has 2 syllables.
| # | Sentence | |
|---|---|---|
| 1. | According to Aristotle, the planets and stars were located in an unchanging region of the world called the aether. | |
| 2. | Aristotle believed that the celestial bodies were made of a fifth element, called the aether or quintessence. | |
| 3. | Aristotle believed that the four physical elements were subject to change, but not the fifth element which he called the aether. | |
| 4. | Aristotle believed that aether naturally moved in circles. |