Which contemporary comet discoverer's success was Messier aware of during his quest for fame?

Answer

Caroline Herschel.

Messier's intense pursuit of comet discovery was fueled by his awareness of astronomical competition, specifically noting the achievements of other contemporary observers. Among those he was aware of were the renowned comet discoverer Caroline Herschel and her brother, William Herschel. The drive to secure a comet discovery before others, particularly those like Caroline Herschel, provided significant motivation for Messier to endure long hours of observation, as such a find guaranteed immediate recognition in the annals of astronomy.

Which contemporary comet discoverer's success was Messier aware of during his quest for fame?
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