It happens ABOUT once a month. If you take photographs using a telescope and the same magnification factor, it's fairly obvious. However, because of several factors, it doesn't happen at the same phase of the moon each time, so there's no simple way of answering and the calculations are fairly involved.
The Moon is the nearest natural object to Earth in space.
The moon is said to be at perigee when it's nearest the Earth.
The moon is said to be at perigee when it's nearest the Earth.
The Moon is our nearest neighbour in space at about 242,000 miles.
The Moon
The Earth
The Moon
the moon.
The moon
Our moon's the closest, followed by Venus.
The Moon is the nearest heavenly body to Earth, located at an average distance of about 384,400 kilometers (238,855 miles).
Our moon's nearest neighbour is us, the Earth.