Eratosthenes of Cyrene. He did it by measuring the size of shadows at different locations on the planet and was right to within a few percent.
No scientist found the Earth.
It depends on the name of the scientist. Albert Einstein's first name is Albert.
geologist
Geologist.
geologist
geologist
The German biologist's first name was Theodor.
The scientist who first studied living cell was A.V. Leeuwenhoek in 1674
The first name of Earth is Terra, which is derived from Latin.
I think scientist are still trying to figure out.
Benjamin Franklin
A scientist who studies floods is called a hydrologist. Hydrologists study the distribution, movement, and properties of water on Earth.