Famous Astronomers
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Famous Astronomers

There have been astronomers studying the heavens for as long as humanity has looked at the stars to explain those bright lights in the sky. See some of history’s most popular astronomers and physicists, from earliest observations of heavenly occurrences by humanity to today’s inquiries of profound sky objects that hold the universe’s secrets.

Johannes Kepler

Johannes Kepler defended and altered the Copernican perspective of the solar system. Kepler deduced that, as Copernicus had assumed, the planets do not move around the Sun in perfect circles, but rather have elliptical orbits. This insight created his first planetary law, which he released in 1609 with the second law stating that planets are not traveling all over their orbits at the same pace.

Galileo Galilei

Galileo Galilei, with his job in physics, astronomy, and scientific methodology, was the key figure of the 17th-century scientific revolution. He demonstrated famously that all falling bodies, regardless of mass, fall at the same pace. He also created the first clock of the pendulum. Galileo also experimented with telescopes. 

Carl Sagan

Born in Brooklyn, New York, Carl Sagan served as professor of astronomy and space sciences, as well as director of Cornell University’s Laboratory for Planetary Studies. He produced numerous science findings, including explaining Venus ‘ elevated temperatures and Mars ‘ seasonal changes. The true contribution Sagan made to astronomy was as a science educator and popularizer. He has released countless papers and books, including “Cosmos,” which has become a TV show viewed all over the world.