KIDS TRIVIA

Detailed explanation-1: -Ptolemaic system, also called geocentric system or geocentric model, mathematical model of the universe formulated by the Alexandrian astronomer and mathematician Ptolemy about 150 CE and recorded by him in his Almagest and Planetary Hypotheses.

Detailed explanation-2: -Ptolemy placed the Earth at the centre of his geocentric model. Using the data he had, Ptolemy thought that the universe was a set of nested spheres surrounding the Earth. He believed that the Moon was orbiting on a sphere closest to the Earth, followed by Mercury, then Venus and then the Sun.

Detailed explanation-3: -Ptolemy made contributions to astronomy, mathematics, geography, musical theory, and optics. He compiled a star catalog and the earliest surviving table of a trigonometric function and established mathematically that an object and its mirror image must make equal angles to a mirror.

Detailed explanation-4: -Ptolemy believed in the geocentric model because of his observations and findings. To start, Ptolemy didn’t have modern technology to observe space. He used his own observations during the night and mapped out planetary movement, along with the Sun and stars.