Vocation : Science : Astronomy

John Richard Gott III (born February 8, 1947) is a professor of astrophysical sciences at Princeton University. He is known for his work on time travel and the Doomsday argument.

Evry Léon Schatzman (16 September 1920 – 25 April 2010) was a French scientist hailed as "the father of modern French astrophysics".

Félix Savary, who was born on 4 October 1797 in Paris and died on 15 July 1841 in Estagel, was a French astronomer.He studied at the École Polytechnique, where he was later a professor of astronomy. He was a librarian at the Bureau des Longitudes between 1823 and 1829, and was elected to the French Academy of Sciences on 24 December 1832.In his works Mémoire sur les orbites des étoiles doubles and Sur la détermination des orbites que décrivent autour de leur centre de gravité deux étoiles très rapprochées l'une de l'autre, published in 1827, he was the first to use observations of a visual binary star to calculate the orbit of one star about the other. He applied his method to the star ξ Ursae Majoris.He worked with Ampère, publishing in 1823 the work Mémoire sur l'application du calcul aux phénomènes électro-dynamiques.

Félix-Victor Mauvais (or Victor Mauvais; March 7, 1809 – March 22, 1854) was a French politician and astronomer. He was born in the small village of Maîche in the department of Doubs and died in Paris.
In 1836 he went to the Observatoire de Paris as a student astronomer. He worked at the Bureau des Longitudes from 1843 to 1854, working on meteorology. He was elected to the Académie des Sciences in 1843. He won the Lalande Prize in 1843 for the discovery of comet C/1843 J1. He also discovered comets C/1844 N1 and C/1847 N1.
In politics, he served as a leftist member of the National Assembly from 1848 to 1849.
On March 2, 1854, the Observatory and the Bureau des Longitudes were separated, which obliged Mauvais to leave this institution. Very affected by this, he fell ill and committed suicide a few weeks later.

Jean-Félix Adolphe Gambart (12 May 1800 – 23 July 1836) was a French astronomer.He was born in Sète in Hérault department, the son of a sea captain. His intelligence was noticed at a young age by Alexis Bouvard, who persuaded him to join the astronomy profession. In 1819 he joined the Marseilles Observatory and became the director in 1822.
During his career he recorded a number of observations of the satellites of Jupiter, and discovered a total of 13 comets. In 1832 he observed the transit of Mercury across the Sun, noting that the planet appeared deformed as it approached the edge.
He suffered from tuberculosis, and in 1836 died from cholera in Paris, aged 36.
The crater Gambart on the moon is named after him. He was also awarded the medal of the London Astronomy Society for his calculation of a cometary orbit.

Jean François Chazy (15 August 1882, Villefranche-sur-Saône – 9 March 1955, Paris) was a French mathematician and astronomer.

Roger Victor Émile Cayrel (4 December 1925 – 11 January 2021) was a French astronomer. His main interests were stellar atmospheres, galactic chemical evolution and metal-poor stars.