Aristarhos was born in 310 BC and died in 230 BC. He was a Greek astronomer and a Maths teacher. He was born in Samos.
He suggested that the sun was the centre of the solar system. Originally, his ideas about astronomy were not accepted. He observed the movement of the moon and claimed that the diameter of the Earth was three times bigger than the diameter of the moon. He reached the conclusion that the sun had a diameter twenty times bigger than that of the moon and that the sun is bigger than the Earth.
In the picture above you can see “Aristarhos”, the second biggest telescope in Europe named after this great Greek astronomer, and which is on the mountain in Kalavryta, a town about 80 kms away from Patra.
Demetres Proskefalas, Grade 2, Level 2, 2nd Junior High School of Paralia