Question: Hans Schlegel and Philippe Perrin, have which occupation in common?

Context paragraphs:
Capitulation of Franzburg: The Capitulation of Franzburg (German: "Franzburger Kapitulation" ) was a treaty providing for the capitulation of the Duchy of Pomerania to the forces of the Holy Roman Empire during the Thirty Years' War.  It was signed on 10 November (O.S.) or 20 November (N.S.) 1627 by Bogislaw XIV, Duke of Pomerania and Hans Georg von Arnim, commander in chief of an occupation force belonging to the army of Ferdinand II, Holy Roman Emperor, led by Albrecht von Wallenstein.  While the terms of the capitulation were unfavourable for the Duchy of Pomerania already, occupation became even more burdensome when the occupation force did not adhere to the restrictions outlined in Franzburg.  Stralsund resisted with Danish, Swedish and Scottish support, another Danish intervention failed.  Imperial occupation lasted until Swedish forces invaded in 1630, and subsequently cleared all of the Duchy of Pomerania of imperial forces until 1631.

Søren Kierkegaard: Søren Aabye Kierkegaard ( or ; ] ; 5 May 1813 – 11 November 1855) was a Danish philosopher, theologian, poet, social critic and religious author who is widely considered to be the first existentialist philosopher.  He wrote critical texts on organized religion, Christendom, morality, ethics, psychology, and the philosophy of religion, displaying a fondness for metaphor, irony and parables. Much of his philosophical work deals with the issues of how one lives as a "single individual", giving priority to concrete human reality over abstract thinking and highlighting the importance of personal choice and commitment.  He was against literary critics who defined idealist intellectuals and philosophers of his time, and thought that Swedenborg, Hegel, Goethe, Fichte, Schelling, Schlegel and Hans Christian Andersen were all "understood" far too quickly by "scholars".

Tivolis Koncertsal: Tivolis Koncertsal is a 1,660-capacity concert hall located at Tivoli Gardens in Copenhagen, Denmark.  The building, which was designed by Frits Schlegel and Hans Hansen, was built between 1954 and 1956.

Rhacophorus schlegelii: Rhacophorus schlegelii (common names: Japanese gliding frog, Schlegel's green tree frog, Schlegel's flying frog, Schlegel's tree frog) is a species of frog in the family Rhacophoridae.  It is endemic to Japan and found in Honshu, Shikoku, Kyushu as well as the Ryukyu Islands.  It is named after Hermann Schlegel, a 19th century German zoologist.

Hans Schlegel: Hans Wilhelm Schlegel (Überlingen, 3 August 1951) is a German physicist, an ESA astronaut, and a veteran of two NASA Space Shuttle missions.

The Desert of the Tartars: The Desert of the Tartars (Italian: "Il deserto dei Tartari" ) is a 1976 Italian film by director Valerio Zurlini with an international cast, including Jacques Perrin, Vittorio Gassman, Max von Sydow, Francisco Rabal, Helmut Griem, Giuliano Gemma, Philippe Noiret, Fernando Rey, and Jean-Louis Trintignant.  The cast also included Iranian film veteran actor Mohammad-Ali Keshavarz.

Philippe Perrin (artist): Philippe Perrin, (La Tronche, 10 August 1964) is a French artist and contemporary photographer who lives and works in Paris.

Philippe Perrin: Philippe Perrin (Colonel, French Air Force) (born January 6, 1963) is a French test pilot and former CNES and European Space Agency astronaut.

Jupiter's Thigh: On a volé la cuisse de Jupiter (literally "Jupiter's thigh was stolen") is a French movie released in 1980, starring Annie Girardot, Philippe Noiret and Francis Perrin, and directed by Philippe de Broca.  It is a sequel to the 1978 crime film in which both Girardot and Noiret reprise their roles as Lise Tanquerelle and Antoine Lemercier respectively.

Bothriechis schlegelii: Bothriechis schlegelii, the eyelash viper, is a venomous pit viper species found in Central and South America.  Small and arboreal, this species is characterized by a wide array of color variations, as well as the superciliary scales above the eyes.  It is the most common of the green palm-pitvipers (genus "Bothriechis"), and is often present in zoological exhibits.  The specific name "schlegelii" honors Hermann Schlegel, who was a German ornithologist and herpetologist.  For other common names see below.  No subspecies are currently recognized.

Supporting paragraphs: Hans Schlegel Philippe Perrin
Answer: astronaut