Pythagoras of Samos ( 570 – c. 495 BC) was an ancient Ionian Greek philosopher and the eponymous founder of Pythagoreanism. His political and religious teachings were well known in Magna Graecia and influenced the philosophies of Plato, Aristotle, and, through them, Western philosophy.
Contributions of Pythagoras are well noted and have served an intimately important part in our understanding of science and mathematics.
Many mathematical and scientific discoveries have been attributed to Pythagoras, including his famous theorem.
Although, it is said that the Pythagorean Theorem was known and used by the Babylonians and the Indians centuries before Pythagoras.
But theoretically, he may have been the one to introduce it to the Greeks.
Pythagoras and his contemporary Parmenides of Elea were both credited with having been the first to teach that the Earth was spherical, the first to divide the globe into five climatic zones, and the first to identify the morning star and the evening star as the same celestial object (now known as Venus).
It is believed that Parmenides might have been the one who actually made the discoveries but they somehow ended up to be attributed to Pythagoras.
So, if you look at it, Pythagoras might not have really done anything important. Nevertheless, he will remain quite an important part of scientific and mathematical history.
Whatever the case be, he did introduce/re-introduce some very important facts and theorems.
They stated that the Earth was spherical almost around 2500 years ago.
I am just blown away by the fact how we still have people who believe that the Earth is FLAT.
P.S. Earth isn’t exactly spherical either.