Arnaud Prost

Arnaud Prost (born 1992) is a French engineer, test pilot, professional diver, and astronaut reservist in the European Astronaut Corps. He underwent his initial military training as a Polytechnician officer candidate (EOX) in the French Army, being assigned the rank of aspirant and trained at the 1st Parachute Hussar Regiment. He obtained his military parachutist badge and began a career in sport parachuting, completing over 200 freefall jumps. Upon graduation, he was promoted to second lieutenant. He conducted research at NASA's Jet Propulsion Laboratory in Pasadena, California, studying potential landing sites for the Mars 2020 Perseverance rover. within the Direction générale de l'armement (DGA).

In 2017, he received his engineering degree from ISAE-SUPAERO (conception and operation of space systems) and a master's degree in astrophysics, space sciences, and planetology from the Toulouse III - Paul Sabatier University. He conducted research at the Skobeltsyn Institute of Nuclear Physics at Moscow State University and the Moscow Aviation Institute in Russia.

From 2017 to 2020, he underwent pilot training in the French Air and Space Force and obtained his fighter pilot certificate. As such, he remains in his current position but must spend four to five weeks per year at the Astronaut Centre for training, scientific experiments, or communication operations.

He will serve as a flight test engineer on the first crewed mission and flight acceptance test for Haven-1, operated by Vast and SpaceX.