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Moon

The Earth's only natural satellite. The moon has a cold, dry orb covered with many lunar craters and strewn with rocks and dust. The moon has no atmosphere. But recent lunar missions have found plenty frozen water on the moon.

Industry: Astronomy

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Moon

near side

Astronomy; Moon

The side of the Moon that is visible from the Earth.

new Moon

Astronomy; Moon

The phase of the Moon when it is directly between the Earth and the Sun. Because sunlight is hitting only the far side of the Moon, it appears dark from the Earth. Reflected light from Earth can ...

nodes

Astronomy; Moon

The imaginary points at which the orbital path of the Moon or other celestial body crosses the ecliptic.

lunar nodes

Astronomy; Moon

The imaginary points at which the orbital path of the Moon or other celestial body crosses the ecliptic.

nodical month

Astronomy; Moon

A lunar cycle measured by the Moon moving from one node and back again which spans 27. 21222 days.

occulation

Astronomy; Moon

The movement of one celestial object behind another. Such as a star behind the moon.

old crescent Moon

Astronomy; Moon

Phase of the Moon that occurs between the last quarter and the new Moon. In this phase, the Moon is visible only as a very thin crescent.

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