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276 BCE
Eratosthenes
He found the earths distance from the sun, no one knows the date and he is important because we knew the distance from it back then that helps us understand how far it was back then. -
100
Cladius Ptolemy
He found out that the planets orbit in a elyptical and it is important because even though it was wrong and none of this was true it was held for many years and was still helpful finding out how the universe worked, it was discovered in around 150AD -
Feb 19, 1473
Nicolaus Copernicus
He was the person who revamped the sun as the center of the universe idea somewhere in 1507-1515, It's important because we would still think the earth was the center for a hundred years or even more! -
1546
Tycho Brahe
He had the most accurate measurements of the solar system found in 1598-1602, It is important because it was the most accurate for astronomy and it helped people know where it was for hundreds of years. -
1571
Johannes Kepler
He was figuring out the orbits of the planets around 1600AD, it is important because we knew why we orbit and how we orbited. -
Sir Isaac Newton
He was the one to discover the laws of motion of universal laws, it is important because we can figure out what would happen to a object in the future, his work was published on July 5, 1687. -
Albert Einstein
He made people understand special relativity by the equation E = mc2, it was important because it lead to people understanding how relativity worked and it was Genius, it was before 1921.