Astronomy. The angle between the lines joining a specified planet or other body to the sun and to the earth or other point of observation.
| 单词 | θ485 |
| 释义 | the world > the universe > planet > position of planet > [noun] > phase angle (1) phase angle1898 Astronomy. The angle between the lines joining a specified planet or other body to the sun and to the earth or other point of observation. |
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