Democritus was an ancient Greek philosopher born in Abdera of Thrace, Greece.
He believed that matter is made up of things that cannot be destroyed and which are invisible, the atoms.
Also, he was the first who understood that the galaxy is the light of long-distance stars. He was one of the first scientists who said that our world has also got other “worlds” with life on them.
Democritus dealt with all areas of human knowledge: maths, physics, cosmology, astronomy, biology, geography, history, and education.
Nicole Panayiotatou, Grade 2, 2nd Junior High School of Paralia