Ever since Claudius Ptolemy published the "Almagest" in the second century AD, almost all astronomers had believed that the Earth lay at the centre of the universe.

自从克劳迪亚斯·托米勒在公元二世纪发表了《天文学大成》以来，几乎所有的宇宙学家都深信地球处于宇宙的中心，而太阳、行星和其他恒星被认为绕着地球一天转一回。

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At the forefront of the pioneers in the field was the Greek mathematician and philosopher Claudius Ptolemaeus (c. AD 90 ?168), more popularly known to history as Ptolemy.

这一领域的先驱中最早的是希腊数学家和哲学家克劳迪•托勒密(约公元90年～168年)，历史上多称他托勒密。

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At the forefront of the pioneers in the field was the Greek mathematician and philosopher Claudius Ptolemaeus (c. AD 90 ?168), more popularly known to history as Ptolemy.

这一领域的先驱中最早的是希腊数学家和哲学家克劳迪•托勒密(约公元90年～168年)，历史上多称他托勒密。

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