The French Air Force (French: "Armée de l'air" ] , literally "air army") is the air force of the French Armed Forces.
 It was formed in 1909 as the "Service Aéronautique", a service arm of the French Army, then was made an independent military arm in 1934.
 The number of aircraft in service with the French Air Force varies depending on source, however sources from the French Ministry of Defence give a figure of 658 aircraft in 2014.
 The French Air Force has 241 combat aircraft in service, with the majority being 133 Dassault Mirage 2000 and 108 Dassault Rafale.
 As of early 2017, the French Air Force employs a total of 41,160 regular personnel.
 The reserve element of the air force consisted of 5,187 personnel of the Operational Reserve.
Thomas Arthur Reiter (born 23 May 1958 in Frankfurt, West Germany) is a retired European astronaut and is a Brigadier General in the German Air Force currently working as ESA Interagency Coordinator and Advisor to the Director General at the European Space Agency (ESA).
 He was one of the top 25 astronauts in terms of total time in space.
 With his wife and two sons he lives near Oldenburg in Lower Saxony.
Samantha Cristoforetti (] ; born 26 April 1977 in Milan) is an Italian European Space Agency astronaut, Italian Air Force pilot and engineer.
 She holds the record for the longest uninterrupted spaceflight of a European astronaut (199 days, 16 hours), and until June 2017 held the record for the longest single space flight by a woman until this was broken by Peggy Whitson.
 She is also the first Italian woman in space.
 Samantha Cristoforetti is also known as the first person who brewed an espresso coffee in space.
The Austrian Space Agency, since 2005 officially Aeronautics and Space Agency (German: Agentur für Luft- und Raumfahrt) is an organization whose purpose is to coordinate Austrian space exploration-related activities, both national programs and European Space Agency related programs.
 It was established in 1972 in Vienna.
 In 1987, Austria became a member state of the European Space Agency.
Maurizio Cheli (born 4 May 1959) is an Italian air force officer, a European Space Agency astronaut and a veteran of one NASA space shuttle mission.
Claude Nicollier (born 2 September 1944 in Vevey, Switzerland) is the first astronaut from Switzerland.
 He has flown on four Space Shuttle missions.
 His first spaceflight (STS-46) was in 1992, and his final spaceflight (STS-103) was in 1999.
 He took part in two servicing missions to the Hubble Space Telescope (called STS-61 and STS-103).
 During his final spaceflight he participated in a spacewalk, becoming the first European Space Agency astronaut to do so during a Space Shuttle mission (previous ESA astronauts conducted spacewalks aboard "Mir", see List of spacewalks and moonwalks 1965–1999).
 In 2000 he was assigned to the Astronaut Office Extravehicular Activity Branch, while maintaining a position as Lead ESA Astronaut in Houston.
 Nicollier retired from ESA in April 2007.
Léopold Eyharts (born April 28, 1957) is a Brigadier General in the French Air Force, an engineer and ESA astronaut.
Philippe Perrin (Colonel, French Air Force) (born January 6, 1963) is a French test pilot and former CNES and European Space Agency astronaut.
GRAVES (French: "Grand Réseau Adapté à la Veille Spatiale" ) is a French radar-based space surveillance system, akin to the American Air Force Space Surveillance System.
 Using radar measurements, the French Air Force is able to spot satellites orbiting the Earth and determine their orbit.
 The GRAVES system took 15 years to develop, and became operational in November, 2005.
 GRAVES is also a contributing system to the European Space Agency's Space Situational Awareness Programme (SSA).
Michel Ange-Charles Tognini (born September 30, 1949 in Vincennes, France) is a French test pilot, Brigadier General in the French Air Force, and a former CNES and ESA astronaut who serves from 01.01.2005 to 01.11.2011 as Head of the European Astronaut Centre of the European Space Agency.
 A veteran of two space flights, Tognini has logged a total of 19 days in space.
 Tognini has 4000 flight hours on 80 types of aircraft (mainly fighter aircraft including the MiG-25, Tupolev 154, Lightning MK-3 and MK-5, Gloster Meteor, and F-104).
 He is fluent in English and Russian.

Question: Which European Space Agency astronaut, Maurizio Cheli or Léopold Eyharts  is a Brigadier General in the French Air Force? 
Answer: Léopold Eyharts