What is Saros Period?
It is a cycle of 18 years and 11.3 days during which the Sun, Earth and Moon return to almost the same relative positions. The ancient astronomers used the Saros Period as a rough empirical formula for predicting the cycle of eclipses.
Why does the Earth have a magnetic field?
The spinning motion of the molten metallic core of the Earth generates a magnetic field.
Does the solar radiation have any effect on the Earth’s magnetic field?
The Earth’s magnetic field absorbs some of the Sun’s radiation. The trapped radiation hovers around the Earth in the form of two distinct bands or belts called the inner and the outer Van Allen Belts.
What is the magnetopause?
The boundary of the magnetosphere is called the magnetopause, beyond which lies the shock front where the solar wind meets the Earth’s magnetic field.