Cosmos, a very short introduction

Copernican Principle

In physical cosmology, the Copernican principle states that humans, on the Earth or in the Solar System, are not privileged observers of the universe, that observations from the Earth are representative of observations from the average position in the universe. Named for Copernican heliocentrism, it is a working assumption that arises from a modified cosmological extension of Copernicus' argument of a moving Earth.

哥白尼原则（英语：Copernican principle），又称哥白尼原理，是一种哲学的陈述：人类在观测宇宙时并非处于一个特殊地位（例如由造物者特别打造的中心位置），类似平庸原理。

原本托勒密模型的天空将地球放置在太阳系的中心，尼古拉·哥白尼则发现天体的运动可以不用地球（或别的）在中心的几何系统来解释，所以他假设从一个特别的位置来观测是可以转化至别的位置来说明。