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conjunction
1. The alignment of two celestial bodies as seen from Earth.

A superior planet, or other object, is in conjunction when it lies behind the sun.

An inferior planet, or other object, comes to inferior conjunction when it passes between the earth and the sun.

It is at superior conjunction when it passes behind the sun.

Planetary conjunction takes place when a planet is closely aligned with another celestial object; such as, the moon, a star, or another planet.

2. The lining up of two celestial bodies so they lie in the same direction as seen from Earth.

Superior conjunction occurs when a planet lies on the other side of the sun from the earth.

Inferior conjunction occurs when a planet lies on the line joining the sun and the earth, and is closer to the earth.

This entry is located in the following unit: Astronomy and related astronomical terms (page 7)
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Word Entries containing the term: “conjunction
inferior planet conjunction
When a planet passes between the earth and the sun.
This entry is located in the following unit: Astronomy and related astronomical terms (page 13)
planetary conjunction
Planetary conjunction takes place when a planet is closely aligned with another celestial object; such as, the moon, a star, or another planet.
This entry is located in the following unit: Astronomy and related astronomical terms (page 19)
superior planet conjunction
In conjunction or the alignment of two celestial bodies when they lie or pass behind the sun.
This entry is located in the following unit: Astronomy and related astronomical terms (page 25)