Why don't we see an eclipse every New or Full Moon?

Answer 1

We don't see an eclipse every New or Full Moon because the moon's orbit around the Earth is tilted by about 5 degrees relative to the Earth's orbit around the Sun. This means that most of the time the Moon passes slightly above or below the Earth's shadow, so there is no eclipse. However, during the lunar nodes, when the Moon crosses the plane of the Earth's orbit around the Sun, it is more likely to pass through the Earth's shadow, leading to a lunar eclipse during a Full Moon or a solar eclipse during a New Moon. The alignment of the Moon, Sun, and Earth has to be just right for an eclipse to occur, and this doesn't happen every New or Full Moon.