It is often claimed that the 1676 discoveries at the Paris Observatory of a new irregularity in the orbit of Jupiter’s first satellite and of the velocity of light were not due to Rømer alone but that Cassini played a major role or even that Rømer took over these ideas from Cassini. These claims indirectly accuse Rømer and Cassini of dishonesty. We investigate the foundations of these allegations through an analysis of apparent contradictions in the primary, historical sources. The minutes from a meeting of the Academy on 22 August 1676 are especially important. Our analysis shows no reason to believe that Cassini took part in the discoveries, but his criticism incited Rømer to argue his case better. We conclude that the discoveries were due to Rømer alone and that the accusations against the two scientists of dishonesty are ill founded.

中文翻译：

---

1676 年巴黎：光速的发现以及罗默和卡西尼的作用

人们经常声称，1676 年在巴黎天文台发现的木星第一颗卫星轨道和光速存在新的不规则性，这不仅仅是因为罗默，而是卡西尼号起了主要作用，甚至是罗默接管了这些想法来自卡西尼号。这些说法间接指责罗默和卡西尼不诚实。我们通过对主要历史资料中明显矛盾的分析来调查这些指控的基础。1676 年 8 月 22 日学院会议的会议记录尤为重要。我们的分析表明没有理由相信卡西尼号参与了这些发现，但他的批评促使罗默更好地论证了他的观点。我们得出结论，这些发现是罗默一个人造成的，对两位科学家不诚实的指控是没有根据的。