What causes a solar eclipse? How often do they occur?
When Sun, Moon and Earth comes in a straight line Moon covers the Sun for viewers on particular .location of Earth
So persons on the Area called umbra gets total eclipse.The area known as penumbra there will be partial,.l eclipse.
Soar eclipse happens on new moon nights.Two solar eclipses occur every year never more than five .
Picture credit crystal links.com.
As path of Moon is tilted 5.8 degree to ecliptic eclipses does not happen every month.