There are two separate things that need to be addressed. One is the surface area of the Moon. The other is the surface area of the NEAR SIDE of the Moon.
As a sphere in space, the Moon is always 50% illuminated, except during lunar eclipses.
The phases of the Moon measure what percentage of the NEAR SIDE of the Moon is illuminated. At the new moon, none of the near side is lit up; at the full moon, 100% of the near side is illuminated.
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During a full moon, the Sun is opposite to the Moon, in the sky.During a full moon, the Sun is opposite to the Moon, in the sky.During a full moon, the Sun is opposite to the Moon, in the sky.During a full moon, the Sun is opposite to the Moon, in the sky.
1st quarter moon . . . 7.38 days after New Moon Full moon . . . 14.77 days after New Moon 3rd quarter moon . . . 22.15 days after New Moon New Moon . . . 29.53 days after the previous New Moon.
full human during a new moon
The half, because the full moon is as light again.
Pretty much so, yes.In exact and precise terms, the Moon is "full" at a specific MOMENT each month, when the Moon is on the opposite side of the Earth from the Sun. (If it were EXACTLY opposite, we would have a lunar eclipse.) But in the 3 hours that it takes for the Earth to spin from "the Moon overhead of New York" to "the Moon overhead from California", the Moon doesn't move along in its orbit by more than a degree or so.So if the Moon is EXACTLY full when it is overhead New York, it will be fractionally past the full by the time the Earth spins enough so that the Moon is straight up from California. But nobody can see the difference between the "Moon at the full" and "the Moon at 3 hours past the full"; the difference is too tiny to be noticed.