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

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.

Phase

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 phase of the Moon when it is entirely illuminated and visible from the Earth forming a full circle. At this point, the Moon is in opposition to the Sun, with the Earth in between.

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.

First quarter Moon

Astronomy; Moon

The phase of the Moon when it is 90 degrees away from a line between the Sun and the Earth, measured east - ward from the Sun, as seen from the north. The angle of illumination creates a half circle ...

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 ...