Question: Both Vladimír Remek and Ulrich Walter are known for being what?

Context paragraphs:
Ulrich Walter: Prof. Dr. Ulrich Hans Walter (born February 9, 1954) is a German physicist/engineer and a former DFVLR astronaut.

Vladimír Remek: Vladimír Remek (born 26 September 1948) is a Czech politician and diplomat as well as a former cosmonaut and military pilot.  He flew aboard Soyuz 28 from 2 to 10 March 1978, becoming the first Czechoslovak in space and the only Czech in space.  As the first cosmonaut from a country other than the Soviet Union or the United States, and with the entry of the Czech Republic into the European Union, Remek is considered to be the first astronaut from the European Union.  Remek was a member of the European Parliament between 2004 and 2013 and, since 2014, has been the Czech Ambassador to Russia.

Baťa's Skyscraper: Baťa's Skyscraper, also known as Building No. 21 is a skyscraper in Zlín, Czech Republic.  It is 77.5 metres high and has sixteen floors.  It was the administration building of the shoemaking factory Bata Shoes.  Now it is headquarters of the Zlín Region.  This building was one of the first high-rise buildings in Europe—being the second tallest pre-war skyscraper after Antwerp's Boerentoren.  The building is in constructivist architecture and was designed by Vladimír Karfík.

The Poacher from Egerland: The Poacher from Egerland (German:Der Wilderer vom Egerland) is a 1934 Austrian-Czech drama film directed by Walter Kolm-Veltée and Vladimír Majer and starring Oskar Marion, Frantisek Slégr and Markéta Krausová.

Ulrich I, Count of Württemberg: Ulrich I, Count of Württemberg (1226 – 25 February 1265), also known as “Ulrich der Stifter” or “Ulrich mit dem Daumen”, was count of Württemberg from about 1241 until his death.

St. Ulrich, Vienna: The church St. Ulrich is a Roman Catholic parish church in Neubau, the 7th district of Vienna, Austria.  The official name is "Pfarrkirche hl.  Ulrich und Maria Trost " (Parish church of St. Ulrich and Mary's consolation), it is also known as Ulrichskirche .  The Baroque hall church with two towers was built in 1721.  It is consecrated to St. Ulrich and St. Mary.

Oldřich Pelčák: Oldřich Pelčák (born November 2, 1943 in Zlín, Czechoslovakia) was a Czech cosmonaut and engineer.  He graduated from Gagarin Air Force Military Academy.  In 1976, Pelčák was selected as backup of Vladimír Remek for the Soyuz 28 mission.  They were the first cosmonauts who were neither Americans nor Soviets.

Vladimír Chvátil: Vladimír Chvátil /vlaɟɪmiːr xvaːcɪl/ (often known professionally as Vlaada Chvátil /vlaːda xvaːcɪl/ ) is a Czech board game designer and a video game designer.  He became a recognizable name in the board game community following the publication of "" in 2006 and thereafter his designs frequently made the top 100 list on BoardGameGeek.  In 2016, he won the coveted award "Spiel des Jahres" (Game of the Year) in Germany for "Codenames".

Lars Ulrich: Lars Ulrich {'1': ", '2': ", '3': 'R', '4': "} ( ; ] ; born December 26, 1963) is a Danish musician, songwriter, actor, and record producer.  He is best known as the drummer and co-founder of the American heavy metal band Metallica.  The son of tennis player Torben Ulrich and grandson of tennis player Einer Ulrich, he also played tennis in his youth and moved to Los Angeles at age 16 to train professionally.  However, rather than playing tennis, Ulrich began playing the drums.  After publishing an advertisement in "The Recycler", Ulrich met vocalist/guitarist James Hetfield and formed Metallica.

Hero of the Czechoslovak Socialist Republic: The title of the Hero of the Czechoslovak Republic was established 1955.  The name of the title was changed to Hero of the Czechoslovak Socialist Republic in 1960.  Awarded 31 times to some Czechoslovak war heroes, to the general and later president Ludvík Svoboda, to the Czechoslovak president Gustáv Husák, to the Czech cosmonaut Vladimír Remek, Soviet generals and marshals and to Leonid Brezhnev.  The piece no. 32 has been given to the National Museum.

Supporting paragraphs: Vladimír Remek Ulrich Walter
Answer: astronaut