Outermost has 3 syllables and the stress is on the first syllable.
| # | Sentence | |
|---|---|---|
| 1. | One night in 1572, Danish astronomer Tycho Brahe saw what he thought was a brilliant new star in the constellation Cassiopeia. (We now know he was observing a supernova.) In 1604, a second supernova was observed. These discoveries caused scientists to seriously question Ptolemy's theory that all stars were contained in an outermost sphere of the universe that never changed. | |
| 2. | The exosphere is the outermost layer of our atmosphere. | |
| 3. | Callisto, the outermost of the four Galilean moons, has an old surface that is perhaps the most heavily cratered of any object in the solar system. | |
| 4. | The Sun's corona is the outermost part of the Sun's atmosphere. |