What is the Contribution of Tycho Brahe and Christain Huygens in the Field of Astronomy ?
Tycho Brahe made a remarkable star catalogue of over 1000 stars. This was not the biggest catalogue in the number of stars, but in accuracy. His improvements of methods and accuracy in observations was very significant. He proved that comets are not objects in the atmosphere. He showed irregularities in the moons orbit. His wall quadrant and other instrument became widely copied and lead to improved stellar instruments. Kepler used Tycho Brahe’s observations when he constructed his famous laws of planetary movement. On 11 November 1572, Tycho observed (from Herrevad Abbey) a very bright star, now named SN 1572, which had unexpectedly appeared in the constellation Cassiopeia. Because it had been maintained since antiquity that the world beyond the Moon’s orbit was eternally unchangeable (celestial immutability was a fundamental axiom of the Aristotelian world-view), other observers held that the phenomenon was something in the terrestrial sphere below the Moon. However, in the first ins
