Question: Are both Thomas Reiter and Sigmund Jähn astronauts?

Context paragraphs:
Nationalist Movement: The Nationalist Movement is a Mississippi-founded, white nationalist organization with headquarters in Georgia that advocates what it calls a "pro-majority" position.  It has been called white supremacist by the Associated Press and Anti-Defamation League, among others.  Richard Barrett was succeeded by unanimous vote as leader by Thomas Reiter after Barrett's murder.  Its Secretary originally was Barry Hackney, and the position of Secretary was discontinued by Thomas Reiter.  Thomas Reiter saved most Nationalist Movement assets and intellectual property after Barrett's murder.  The symbol of the movement is the Crosstar.  In 2012 with the endorsement of Thomas Reiter, Travis Golie was sworn in as the Leader of The Nationalist Movement.  Like Reiter, Golie was an original Barrett-era Nationalist Movement member.  Golie returned The Nationalist Movement headquarters to the South where it originated.

Ulf Merbold: Dr. Ulf Dietrich Merbold (born June 20, 1941) is the first West German citizen and second German native (after Sigmund Jähn) to have flown in space.  He is also the first member of the European Space Agency Astronaut Corps to participate in a spaceflight mission and the first non-US citizen to reach orbit in a US spacecraft.  In 1983, he and Byron Lichtenberg became the first Payload Specialists to fly on the shuttle.

Sigmund Jähn: Sigmund Werner Paul Jähn (born 13 February 1937) is a German cosmonaut and pilot, who in 1978 became the first East German (and German native) to fly in space as part of the Soviet Union's Interkosmos programme.

Stefan Walz: Stefan Walz (born 1963) is a Swiss actor.  His best known role is as Sigmund Jähn in the film "Good Bye, Lenin! ".

Eberhard Köllner: Eberhard Köllner (born 29 September 1939 in Stassfurt, Germany) was selected for Soyuz 31 as the backup for Sigmund Jähn.

Thomas Reiter: 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.

STS-121: STS-121 was a 2006 NASA Space Shuttle mission to the International Space Station (ISS) flown by Space Shuttle " Discovery".  The main purposes of the mission were to test new safety and repair techniques introduced following the "Columbia" disaster of February 2003 as well as to deliver supplies, equipment and European Space Agency (ESA) astronaut Thomas Reiter from Germany to the ISS.

Heidi (1952 film): Heidi is a 1952 Swiss family drama film directed by Luigi Comencini and starring Elsbeth Sigmund, Heinrich Gretler and Thomas Klameth.  It is based on the 1880 novel "Heidi" by Johanna Spyri.  It was followed by a 1955 sequel "Heidi and Peter".

Expedition 14: Expedition 14 was the 14th expedition to the International Space Station (ISS).  Commander Michael López-Alegría, and flight engineer Mikhail Tyurin launched from Baikonur Cosmodrome on 18 September 2006, 04:09 UTC, aboard Soyuz TMA-9.  They joined Thomas Reiter, who had arrived at the ISS on 6 July 2006 aboard Space Shuttle "Discovery" during mission STS-121.  In December 2006, "Discovery" mission STS-116 brought Sunita Williams to replace Reiter as the third member of Expedition 14.  On 21 April 2007, López-Alegría and Tyurin returned to Earth aboard TMA-9.  Landing occurred at 12:31:30 UTC.

Thomas Druyen: Thomas Druyen (born July 2, 1957 in Süchteln) is a German sociologist.  Druyen is considered one of the most renowned researchers on Ethical Wealth (Vermögen) and the Culture of Wealth (Vermögenskultur) in the German-speaking world.  He holds the only chair in Europe for Vergleichende Vermögenskultur (Comparative Culture of Wealth) at the Sigmund Freud University Vienna.  In 2009 he was appointed Director of the newly established Institute for the Science of Ethical Wealth at the Sigmund Freud University.

Supporting paragraphs: Thomas Reiter Sigmund Jähn
Answer: no