No, the Moon is not visible every night. The visibility of the Moon depends on its phase and its position relative to the Sun and Earth.
The Moon goes through different phases as it orbits around the Earth. The most well-known phases are the New Moon, First Quarter, Full Moon, and Last Quarter. During the New Moon phase, the side of the Moon that faces the Earth is not illuminated by sunlight and appears dark, making it invisible from Earth. As the Moon moves in its orbit, it gradually becomes more visible, reaching the First Quarter phase where half of the Moon's face is illuminated. It continues to wax and becomes a Full Moon when the entire face is visible. Then it begins to wane, reaching the Last Quarter phase before once again becoming a New Moon.
The visibility of the Moon also depends on its position relative to the Sun and Earth. When the Moon is close to the Sun in the sky, we only see a thin crescent or no Moon at all, making it difficult to observe. This is because the illuminated side of the Moon is facing away from Earth. As the Moon moves away from the Sun, its visibility increases, and it becomes more prominent in the night sky.
Additionally, the Moon's visibility can be affected by various factors such as weather conditions, atmospheric pollution, and light pollution from cities, which can make it harder to see even when it is in a visible phase.
In summary, the Moon is not visible every night, as its visibility depends on its phase and position relative to the Sun and Earth.