THE WHO’S WHO OF EARLY ASTRONOMY

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Presentation transcript:

THE WHO’S WHO OF EARLY ASTRONOMY

Ptolemy 140BC; Greek; the Earth was the center of the universe & the sun & other planets revolved around it; lasted 1500 yrs

Copernicus 1543;Polish; the sun was the center of the universe & the planets revolved around it in circular paths

He practiced medicine. Without a medical degree.

Tycho Brahe late 1500’s; Danish; the sun & moon revolved around the Earth & the other planets revolved around the sun; recorded exact data on the positions of the sun, moon, & the planets

His body is currently entombed in the Church of Our Lady in front of Týn in Old Town Square near the Prague Astronomical Clock.

Johannes Kepler 1609; Tycho’s assistant; stated that all planets revolve around the sun in an ellipse & the sun is not the exact center of their orbits Kepler came up with three laws relating to the movement of the planets.

This brilliant astronomer was the first to discuss how the moon affects tides. Galileo was one of his contemporaries who scoffed at him and said that this theory was a baseless one. Kepler’s mother used to collect herbs and natural medicines. She was considered to be a witch. Kepler had to hire lawyers to defend his mother from being sentenced to death. His grandmother was tried in the Salem Witch Trials and sentenced to death.

Galileo Galilei 1609; first person to use a telescope to observe objects in space; discovered 4 moons orbiting Jupiter, craters & mtns on the moon, & sunspots

A hundred years after he died, when his body was being moved for reburial, a fan snipped off the middle finger of his right hand as a memento. Galileo’s finger is now on display, erect, at the Museum of the History of Science in Florence

Isaac Newton 1687; explained that gravity keeps all objects in orbit

Edwin Hubble 1920’s; studied & discovered other galaxies