According to mediaeval European cosmology
, the Earth
lay at the center
of the universe
, while the stars
were points of light
on a tremendous sphere
that surrounded the world, to which all the other planet
s and heavenly bodies
, including Earth's moon
, were attatched. The sphere rotated around
the Earth, thus producing the movement of the planets and stars. This sphere was called the Primovant
This explanation of the workings of the universe was accepted until Galileo Galilei disputed it in the early 1600s. He was jailed as a heretic by the Catholic Church, of course, since the idea that the Earth lay at the center of the universe was the basis for so much Catholic theology.
The Catholic Church admitted that Galileo was correct in 1992, some two hundred and fifty years after everyone else.