Gibbous phase

Gibbous Phase
Related Category: Astronomy: General
(gb´s): see phase, in astronomy.
More on Gibbous Phase ...

gibbous phase
The collective term given to the lunar phases between the quarter phases and full moon. A gibbous moon is illuminated by more than 50%.

Gibbous Phase - The phase of the moon at which the near side of the Moon is more than half illuminated by sunlight. Gibbous phase occurs just before and after full moon ...

Gibbous phases are phases between quarter and full phases. Greatest Elongation refers to the largest separation of the planet from the Sun in our sky, either to the East, or to the West.

After the gibbous phase diminishes, the Moon will reach the 270° position, straight out to the right. This is "third" or "last quarter." It is followed by a thinning crescent and a return to new moon.

How about Gibbous phase?
What are the real angular separations for New and Gibbous phase?
About how much difference in time is there between moonset and sunset at first quarter phase? Does the Moon set before or after the Sun at that phase?

Mercury is brightest as seen from Earth when it is at a gibbous phase, between either quarter phase and full.

The Moon is going to be exibiting a waxing gibbous phase on the night Tuesday, January 26th. The word gibbous means that three quarters of the Moon will be visible. Waxing denotes that more of the Moon will be visible on the next night.

It is independent of any phase that may be present; if Mars presents a gibbous phase, then the CM will appear to be off center. The CM is the areographic longitude in degrees, as seen from Earth at a given Universal Time (U.T.).

Moon, the Moon's disk is nearly completely illuminated as seen from the Earth (position D in the diagram below). The waxing (growing) gibbous Moon rises after noon, transits the meridian after sunset and sets after midnight. The waxing gibbous phase ...

During the next week, the Moon continues to wax, passing through the gibbous phase (panel 3) until, 2 weeks after new Moon, the full Moon (panel 4) is visible.

When it is more than half-illuminated, it is said to be in gibbous phase. The moon is said to be waning when it progresses from full to new, and to be waxing as it proceeds again to full.

full moon, as the Moon continues to move eastward in its orbit about 12 degrees per day, the Moon rises later and later and the side we see is illuminated by less and less sunlight - its light wanes. While the Moon is in this waning gibbous phase, ...

Also, the way that the Moon is illuminated gives us the view we see - when most of the lit surface is turned away from the Earth, we see only a small crescent; when most of the surface is turned toward the Earth, we see the gibbous phase Moon.

See also: Moon, Phase, Gibbous, Earth, Solar