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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.

Contributors in Moon


crescent moon

Astronomy; Moon

The moon when it appears partly but less than one-half lit. It is seen between a new moon and a half moon.

gobbous moon

Astronomy; Moon

The Moon when it appears more than half lit but less than fully lit. It happens between full moon and half moon.

new moon

Astronomy; Moon

The Moon when it is not visible or when it is visible only as a thin crescent, is named as new moon.


Astronomy; Moon

The round object that moves around the Earth at a distance of about 240,000 miles. Moon is one-fourth the size of the Earth.

S/2012 P 1

Astronomy; Moon

S/2012 P 1 is a small natural satellite of the planet Pluto. The moon was discovered on July 11, 2012. It is the fifth satellite of Pluto to be confirmed. The other four Pluto moons are Hydra, Nix, ...


Astronomy; Moon

One of the ways that the moon appears depending on how much of its sun-lit surface is visible.

full moon

Astronomy; Moon

The moon when it appears as a fully lit disk. A full moon happens when the Moon and Sun are on opposite sides of the Earth.

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