EVERYDAY SCIENCE

Detailed explanation-1: -Aristotle, who lived from 384 to 322 BC, believed the Earth was round. He thought Earth was the center of the universe and that the Sun, Moon, planets, and all the fixed stars revolved around it.

Detailed explanation-2: -Aristotle believed the Earth was unique and that mankind was alone in the universe. His hypothesis behind this was that if there were more than one world and the universe had more than one object at the centre, then elements like earth would have more than one natural place to fall to.

Detailed explanation-3: -What were the known planets at the time of Aristotle? Aristotle, around 350 BC, in Ancient Greece, defended the idea that the Earth was the center of the universe and that nine spheres revolved around it, the first being the Moon. Then came Mercury, followed by Venus.

Detailed explanation-4: -The Earth was the center of the Universe according to Claudius Ptolemy, whose view of the cosmos persisted for 1400 years until it was overturned-with controversy-by findings from Copernicus, Galileo, and Newton.

Detailed explanation-5: -There is no centre of the universe! According to the standard theories of cosmology, the universe started with a “Big Bang” about 14 thousand million years ago and has been expanding ever since. Yet there is no centre to the expansion; it is the same everywhere.