The Moon's orbit is elliptical; it can be as near to Earth as 240,000 miles and as far as 280,000 miles.
Near the horizon, there are atmospheric illusions that make the Moon appear to be larger than it is.
The more "full" the Moon is, the bigger it appears to be.
When these factors are combined, at the time of the perigee full moon, the Moon can be objectively about 15% larger than normal, and the illusion at Moonrise can make the Moon appear to be enormous.
The moon looks different sizes at different times due to the distance apart it is from earth. The further away the moon is from earth the smaller it will look. The closer to earth it is the bigger it will look.
They appear to be the same size, as the sun is a very long distance away. The sun is many times larger than the moon.
Ever so slightly, you proably wouldn't recognize the changes though.
because the moon is one quarter size of the earth.
The sun is approximately 400 times the size of the moon, however, it is also approximately 400 times farther away. This relationship cancels out and makes the sun and the moon appear observationally to be the same size on earth.
Under what circumstance is this visible?
It's usually said that the moon is 'waxing' when it appears to grow in size.
The full moon appears larger when it's low in the sky than it does when it's high. That's easily shown to be an optical illusion. For example, when the moon is photographed both high and low in the sky, both images on the film are the same size.
I is called a lunar phase
Even tho the Moon is much smaller than the Sun, they appear to be the same size in the say, because the Moon is so much closer to the earth.
The sun and the moon are the same distance from the earth
because as we move we can see different parts of the moon and where the sun reflects off of it
Size: The Moon has about 1/4 of the diameter of Earth. Mass: The Moon has about 1/81 of the mass of Earth.