This resource provides a video about plate tectonics.

"There are four major seasons in a year- Winter, Summer, Fall, and Spring. In many places in the world rains (rainy time) are considered to be a separate season. These seasons on the earth happen due to earth's movement around the Sun...

This is the story of Tycho Brahe and Johannes Kepler and the contributions they made to the field of Astronomy. They synthesized a lot of new, old, and bold astronomical ideas into a single sun-centered, eccentricity-positive system....