Why does earth not experience a solar and lunar eclipse during each synodic month?

Answer 1

The moon and earth would have to travel in the same planes around the sun. They do not. The relative distances at each occurrence would also have to be fixed. They are not, leading to annular eclipses when the moon is too far away at the time it blocks the sun.

Answer 2

Earth does not experience a solar and lunar eclipse during each synodic month because the Moon's orbit around the Earth is tilted relative to Earth's orbit around the Sun. This means that the alignment required for an eclipse to occur does not happen at every new and full moon. Eclipses only occur when the Sun, Earth, and Moon are aligned in a specific way.