Pronunciation of the English word astronomer.
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1. | J. Kepler, astronomer and mathematician, made a study of planets and their movements. | |
2. | Bradley was an English astronomer. | |
3. | Utilizing an ephemeris, an astronomer can calculate lunar phases and the times of rising and setting of the sun and of the moon all around the world and for any day of the year. | |
4. | I'm an astronomer. | |
5. | Tom is a very well-respected astronomer. | |
6. | Tom is an amateur astronomer. | |
7. | To become an astronomer, you have to study the sciences thoroughly, but to become an astrologer, you just have to study the art of lying. | |
8. | To be an astronomer, you have to study, but to be an astrologer, it is sufficient to be a loser and a big liar. | |
9. | In the 100s BC, Hipparchus, the most important Greek astronomer of his time, calculated the comparative brightness of as many as 1,000 different stars. He also calculated the Moon's distance from the Earth. | |
10. | 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. |