Nicolas Copernicus, the man who moved the Earth

Copernicus studied the night sky carefully and noticed the planets did not move as people expected them to. Most people believed Earth was at the centre, but Copernicus bravely imagined the Sun at the centre instead. His new idea explained why planets moved in loops in the night sky and helped people understand the sky in a new way. Many leaders were shocked by his discovery because it challenged old beliefs they thought were correct. Later scientists used new tools to test his ideas and proved he was right about Earth moving around the Sun.