Page 36 - Demo

36Let us read some information about these great astronomers.Hipparchus was a Greek astronomer and mathematicianwhocompiledthefirstknowncatalogue of stars and made an early formulation of trigonometry.Heisknownasthefatherofscientificastronomy.Aryabhata was a great mathematician and astronomer from India. He believed that the orbits of the planets are ellipses and accurately explained the cause of eclipse.Tycho Brahe was a Danish astronomer. He made accurate observations about the positions of stars and planets. He also showed irregularities in the moon%u2019s orbit by observing it throughout its course.Nicolaus Copernicus conceptualised that the sun is at the centre of the solar system. It is an important landmark in the history of science.