The lunar and solar eclipses do not happen every month because the tilt of the moon’s axis does not allow for monthly alignment. It is for that reason we cannot observe a lunar/solar eclipse every month.
A solar eclipse occurs when the Moon moves between Earth and the Sun.
Moreover, a lunar eclipse happens when Earth moves between the Sun and the Moon, thereby partially or totally shadowing the Moon.
The Moon's orbit the Earth lies in a plane tilted by 5.15° with regard to the plane that Earth's orbit about the Sun.
If the Earth and Moon orbit on exactly the same plane around the Sun, then we could observe both a lunar eclipse and solar eclipse every month.
Learn more in:
https://brainly.com/question/8643
