Astronomy of Greece

The Greece had great estimates of Astronomy

Astronomy

Ptolemy's View of the Solar System

Some important discoveries about the planet came from scientists at Alexandria. For example, Eratosthenes found a way to estimate the circumference of the Earth. His estimate was between 28,000-29,000 miles. In reality, the Earth's circumference is 24,901.5 miles. Another man named Aristarchus studied how the sun, moon, and Earth were similar to each other. He estimated that the sun was 300 times the size of the Earth, while it was really 1.3 million times the size of Earth. 


Lastly, the scientist Ptolemy's view of the Solar System was different from what we have now. He viewed the Earth to be at the Center of the solar system, with all the other planets circling it. He was wrong. It was really the sun at the center of the Solar System.