The human conceptualization of the solar system dates back to the beginning of time. The early Egyptians worshipped the sun as a source of life and then the area called space was becoming a curiosity to humans. Throughout history, our knowledge of the solar system has increased and there is still much to learn. Through the research and studies of Brahmagupta, Ptolemy, Kepler, Brahe, Copernicus, Galileo, Newton, and Einstein. With this knowledge, laws and equations for physical science have been developed and they have been useful to analyze many tangible aspects of science. The earliest astronomers were Ptolemy (90-168 AD) and Brahmagupta (590-678 AD). Ptolemy extended the observations and conclusions of Hipparchus, to form his geocentric theory, which is popularly known as the Ptolemaic system. He described his geocentric system and gave various arguments to prove that, in its position at the center of the universe, the Earth must be immovable. Ptolemy argued that since all bodies fall to the center of the universe, the Earth must be fixed there at the center, otherwise falling objects would not be seen to drop toward the center of the Earth. In Brahmaguptas book, Brahma- sphuta- siddhanta (The Opening of the Universe), he discussed solar and lunar eclipses and positions of the planets. He believed in a static Earth and he gave the length of the year as 365 days 6 hours 5 minutes 19 seconds in the first work, changing the value to 365 days 6 hours 12 minutes 36 seconds in the second book. Quoting Brahmagupta, As the sun eclipses the stars by its brilliancy, so the man of knowledge will eclipse the fame of others in assemblies of the people if he proposes algebraic problems, and still more if he solves them., he foreshadowed the increase in knowledge about the solar system. In about 1513, Copernicus, a Polish astronomer, wrote the Copernican theory, stating that the Sun was at rest in the center of the Universe….
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