-
255 BCE
Eratosthenes
Invented a system of longitude and latitude.
around 255 BC
"Important to calculate the tilt of the Earth's axis." https://www.khanacademy.org/humanities/big-history-project/solar-system-and-earth/knowing-solar-system-earth/a/eratosthenes-of-cyrene#:~:text=Eratosthenes%20was%20also%20the%20first,Sun%2C%20but%20with%20less%20accuracy. -
127 BCE
Claudius Ptolemy
Claudius Ptolemy's theory was the universe was a set of nested spheres surrounding the Earth. Set in 127 bc
The theory was important to state that the Earth was at the center of the universe. -
1543
Nicolaus Copernicus
Discovered every planet, including Earth, revolved around the Sun in 1543.
"It changed the way people used physics and astronomy to understand the universe"
https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1051&context=younghistorians#:~:text=Copernicus'%20work%20was%20ultimately%20most,astronomy%20to%20understand%20the%20universe. -
1572
Tycho Brahe
discovered The supernova in 1572
"Tycho showed this “new star” was far beyond the Moon, and that it was possible for the universe beyond the Sun and planets to change." https://www.nasa.gov/image-feature/the-tycho-supernova-death-of-a-star#:~:text=In%201572%2C%20Danish%20astronomer%20Tycho,Sun%20and%20planets%20to%20change. -
Johannes Kepler
discovered planets move proportionally faster in their orbits when they are closer to the Sun in 1605.
The theory was important to show the stronger the Sun's gravitational pull on it, the faster the planet moves. -
Sir Isaac Newton
Sir Isaac Newton discovered gravity in 1665 or 1666,
"Gravity helped prove the fact that the Earth revolves around the sun." https://www.byjusfutureschool.com/blog/how-the-gravity-equation-changed-how-we-see-the-world/#:~:text=Years%20before%20the%20discovery%20of,Earth%20revolves%20around%20the%20sun. -
Albert Einstein
discovered the photoelectric effect in 1905.
"converting light energy into electric energy." https://www.vedantu.com/question-answer/photoelectric-effect-important-class-10-physics-cbse-60235b22f865ac1e018cdae3#:~:text=The%20major%20role%20of%20photoelectric,convert%20solar%20energy%20into%20electricity.