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Period: 276 BCE to 194 BCE
Eratostenes
1)He is famous for having made the first correct measurement of the circumference of the Earth.
2)he did this around 240 BC.
3)but with this procedure what is clear is that the Earth was a sphere and not a plane, as was believed until almost the end of the Middle Ages. -
Period: 90 BCE to 170 BCE
claudio plotomy
1)Ptolemy asserts that the planets describe circular orbits called epicycles around central points that in turn orbit eccentrically around the Earth.
2)It stood out between the years 127 and 145 d. C.
3)His theories and astronomical explanations dominated scientific thought until the sixteenth century, His astronomical work had great influence in the Middle Ages, comparing with Aristotle in philosophy. -
Period: Feb 19, 1473 to May 24, 1543
Nicolaus Copernicus
1)his heliocentric theory, according to which he was in the center of the universe and the earth, which rotated once a day on its axis, completed each year a circle around him.
2)1543, with the publication of the book of revolutionibus orbium celestium.
3)the theory caused great impact in society, being one of the bases for the scientific revolution and generating intellectual advances. -
Period: Dec 14, 1546 to
Thyco Brahe
1)The measurements of movement of Mars, in particular of its retrograde movement, this was possible for Brahe spent his life observing long before the telescope was invented.
2)it was essential the observations of Brahe to Kepler so that it could formulate the three laws that govern the movement of the planets, then these laws served as the basis for the law of universal gravitation of newton.
3)in the years after his death since he spent his life observing -
Period: Dec 27, 1571 to
Johannes Kepler
1)proposed Kepler's laws describe the movement of the planets around the Sun, Each planet, the Moon and the Sun also, move along or near the ecliptic.
2)he proposed the 1st and 2nd law in 1609 and the third law in 1618
3)Thanks to Kepler's long years of research, Newton was able to formulate his theory of gravitation. -
Period: to
Sir Isaac Newton
1)Relying on Kepler's laws, Newton manages to give a mathematical expression to this force, and could enunciate the law of universal gravitation.
2)in 1685 the famous law of universal gravitation was born
3)The importance of this law is that it shows us that it is what keeps us firmly on the earth, if it were not for the law of gravity we would be floating and who knows physically how we would be. -
Period: to
Albert Einstein
1)his special theory of relativity explained the movement of Mercury's orbit.
2)In 1916, Albert Einstein proposed three experimental facts to confirm the veracity of the General Theory of Relativity among those, the anomalous precession of the orbit of the planet Mercury around the Sun
3)The space is relative, Space and time form a fabric whose fibers are deformed by the presence of matter. A gram of matter is contained an immense amount of energy. Albert Einstein showed us everything