Moon

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

gravity

Astronomy; Moon

One of the fundamental forces of nature, defined as the constant force of attraction between all objects in the universe. Gravity controls the orbits of all planets in our solar system as well as ...

grazing occultation

Astronomy; Moon

An occultation by the Moon of a planet or star where occultation the path of the planet or star only intercepts the north or south limb of the Moon.

greenwich mean time

Astronomy; Moon

Time derived from the annual average movement of the sun over the zero degrees longitude position of the Greenwich Observatory in England. The mean is used in order to compensate for the Sun's ...

Greenwich Mean Time

Astronomy; Moon

Time as measured from the 0 degrees longitude position of the Greenwich Observatory in England, also known as Universal Time (UT).

half Moon

Astronomy; Moon

The phase of the Moon also known as the quarter moon, either first quarter moon, or last quarter moon.

intercalation

Astronomy; Moon

A method of synchronizing a lunar calendar with a solar year by adding extra days or months. Extra days are known as intercalary days and extra months are known as intercalary. Intercalation is the ...