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Ali (proper name) Sitaqiasi
阿里斯塔恰斯
aristarchus,约前3世纪
古希腊天文学家。曾在雅典学院学习。他改进过日晷;最早测定出太阳和月球对地球距离的近似比值,估算出地球和太阳的直径。主张太阳居众恒星中心,与恒星一样静止不动,而地球绕地轴转动,并同其他行星一起绕太阳转动,提出朴素的日心说,但遭到宗教势力的反对。恩格斯称他为古代的哥白尼。现存的著作有《关于太阳和月球的大小及距离》。