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| the partial or imperfect shadow outside the complete shadow of an opaque body, such as a planet, where the light from the source of illumination is only partly cut off |
| the polestar or North Star, a star of the second magnitude close to the north pole of the heavens, in the constellation Ursa Minor |
transit (trān'sĭt) Pronunciation Key
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transit
in astronomy, the passage of a relatively small body across the disk of a larger body, usually the Sun or a planet, occulting only a very small area. Mercury and Venus periodically transit the Sun, and a satellite may transit its planet. Compare eclipse.
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