That's called the "Third Quarter" phase. It occurs
about 22 days after the New Moon.
"Waning" means that less and less of the moon's lighted side is visible from Earth as time goes on. That's what's happening during the entire two weeks from Full Moon until the next New Moon.
The Moon phase when only a sliver of light can be seen is known as the crescent phase. It occurs in the second phase, known as the Waxing Crescent Moon, and in the last phase, known as the Waning Crescent Moon.
This is called a waning moon. If it's more than half full, it's called "waning gibbous." If it's less than half full, it's "waning crescent." The half-full moon between waning gibbous and crescent is called the last quarter. Likewise, on the "growing" side, it's called a "waxing moon" (both crescent and gibbous) and the first quarter, respectively.
Not exactly. The lighted side of the moon as seen from Earth is that part that is not shadowed by the Earth.
telescope
waning
The moon is said to be waning when less and less of the side facing Earth is lighted. :D
The decreasing of the illuminated face of the Moon (full to new) is called "waning." (The opposite, increased illuminated area, is called waxing.)
That would be Third Quarter.
"Waning" means that less and less of the moon's lighted side is visible from Earth as time goes on. That's what's happening during the entire two weeks from Full Moon until the next New Moon.
The Moon phase when only a sliver of light can be seen is known as the crescent phase. It occurs in the second phase, known as the Waxing Crescent Moon, and in the last phase, known as the Waning Crescent Moon.
new moon
new moon
It is the waning phase.
Three-fourths, or 3/4.
Who really cares
The moon phase "waning gibbous" appears after the moon phase "full moon".It becomes the "last quarter" or "third quarter" when the lighted part is exactly 50%of the side facing the Earth.