Famous astronomers

 

Name: Edwin Hubble.

Date of birth: November 20, 1889

Main thought: Tycho thought that progress in astronomy  could not be achieved through occasional observations and occasional research, but that systematic measurements were needed, night after night, with the most accurate instruments possible.

Name: Johannes Kepler.

Date of birth: February 19, 1473.

Main thought: He tried to understand them about planetary motion. At first, Kepler considered that the motion of the planets had to comply with the Pythagorean laws of harmony.

 

Name: Tycho Brahe.

Date of birth: November 15, 1738.

Main thought: Tycho thought that progress in astronomy could not be achieved through occasional observations and occasional research, but that systematic measurements were needed, night after night, with the most accurate instruments possible.

Name: Nicolaus Copernicus.

Date of birth: February 19, 1473.

Main thought: The main ideas of his theory were: The celestial movements are uniform, eternal and circular or consist of several cycles (epicycles). The center of the universe is near the Sun. ... The retrograde motion of the planets is explained by the motion of the Earth.

Name: Ptolemy.

Date of birth: 100 AD

Main thought: He believed that the Earth was motionless and occupied the center of the universe and that the Sun, Moon, planets, and stars revolved around it. ... The retrograde of the planets and their increase in brightness as they retrograde.