What did peirre gassendi discover?

Answer 1

Pierre Gassendi was a 17th-century French philosopher, astronomer, and mathematician known for reviving Epicurean atomism. He is credited with significant contributions to the understanding of celestial bodies and the concept of the vacuum in nature. Gassendi also observed and recorded the transit of Mercury across the Sun in 1631, which was one of the earliest astronomical observations of its kind. His work laid the groundwork for later developments in modern science, particularly in the fields of physics and chemistry.