Alexis Bouvard, French astronomer and academic (d. 1843)
Alexis Bouvard (French pronunciation: ​[alɛksi buvaʁ], 27 June 1767 – 7 June 1843) was a French astronomer. He is particularly noted for his careful observations of the irregularities in the motion of Uranus and his hypothesis of the existence of an eighth planet in the Solar System.