First picture of universe
A well known scientist (some says it was bertrand russel) once give public lecture on astronomy . He described how the earth orbits around the sun and how sun ,in turn ,orbits around the center of a vast collection of star called galaxy At the end of lecture a little old lady at the end of room get up and and said "what rubbish you are saying ! are you making us fool the world is flat plate supported on the back of the giant tortoise .'the scientist gave a smile before replying ,'what is tortoise standing on ?' 'you are very clever , young man ,you are very clever ,'said the old lady . but its turtles all the way down
Flat shape of earth
Most of people would find the picture of universe as an infinite tower of tortoises rather ridiculous . as long the age of 340 BC the Greek Philosopher Aristotle in his book" on the heaven" was able to put one good arguments for believing that the earth is round shape rather the flat ,First he realized that eclipses of moon was caused by the coming of earth between the sun and the moon . The earths shadow on the moon is always round ,Which would be true only if the earth was spherical
Aristotle thought that the earth is stationary and the sun, the moon and the stars moved in circular orbits about the earth . he believed this because he felt , for mystical reasons , that the earth was in the center of the universe , and the circular motion was most prefect . this ideas was elaborate by Ptolemy in the second century AC into a complete cosmological model .The earth stood in center , surrounded by the eight spheres that carried the moon , the sun , the stars and the five planets known that time ( mercury , Venus , mars , Jupiter and Saturn )
Aristotle thought that the earth is stationary and the sun, the moon and the stars moved in circular orbits about the earth . he believed this because he felt , for mystical reasons , that the earth was in the center of the universe , and the circular motion was most prefect . this ideas was elaborate by Ptolemy in the second century AC into a complete cosmological model .The earth stood in center , surrounded by the eight spheres that carried the moon , the sun , the stars and the five planets known that time ( mercury , Venus , mars , Jupiter and Saturn )
ARISTOTLE
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Aristotle was a Greek philosopher and polymath during the Classical period in Ancient Greece. He was the founder of the Lyceum and the Peripatetic school of
Notable students: Alexander the Great
School: Peripatetic school; Aristotelianism
Era: Ancient philosophy
Region: Western philosophy
