EARTH AND ITS MOVEMENTS
THE SOLAR SYSTEM Sun has most of the mass of the solar system. The solar system started forming around 5.6 billion years ago and was fully formed 4.6 billion years ago. EARTH As of our knowledge till now, life exists only on the Earth. Pre-conditions for life like conducive temperature(0-100 C) which allows H2O as the liquid makes life possible on the Earth. Any planet found in the Goldilock zone of a star has the possibility of supporting life-Earth is in the Goldilock zone of the Earth. Hence, whenever we are searching for life anywhere in the universe we look for the Goldilock zone of different stars. Shape of the Earth: We found that the Earth's shape is much closer to Oblate Ellipsoid (non-rotating earth) and Oblate Spheroid(rotating earth) which are slightly flattened at their tops and bottoms. These shapes when used for mathemat...