Sławosz Uznański-Wiśniewski

Sławosz Uznański-Wiśniewski is a Polish astronaut and engineer working at the European Space Agency (ESA), formerly employed at CERN. In June 2025, he became the second Polish national to go to space, marking the country's return to crewed spaceflight after nearly 47 years and its first mission aboard the International Space Station. He was the 701st person in space and the 635th person to reach orbital flight.

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1984  Wikimedia, Wikidata
Slawosz Uznanski
researcher, engineer, astronaut, 

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  Axiom Mission 4 ⓘ
  private crewed spaceflight to the International Space Station in 2025

Poland, 

Frameless

Axiom Mission 4 and Expedition 73 crews (cropped)

Axiom Mission 4 Mission Specialist Sławosz Uznański-Wiśniewski (iss073e0251659) (cropped)

Axiom Mission 4 Mission Specialist Sławosz Uznański-Wiśniewski (iss073e0251659) (cropped2)

ESA astronaut announcement Class of 2022 (52519424151)

ESA astronaut announcement Class of 2022 (52519439276)

ESA astronaut announcement Class of 2022 (52519439511)

ESA astronaut announcement Class of 2022 (52519971813)

ESA astronaut announcement Class of 2022 (52519438586)

ESA astronaut announcement Class of 2022 (52519971813) (cropped)

ESA astronaut announcement Class of 2022 (52519916125)

Type	Subtype	Date	Description	Notes	Source
class	orbit		Axiom Mission 4	Peggy Whitson, Shubhanshu Shukla, Sławosz Uznański-Wiśniewski, Tibor Kapu, human spaceflight, private spaceflight,	Wikidata
commons	image		Axiom Mission 4 and Expedition 73 crews (cropped)		Commons
commons	image		Axiom Mission 4 Mission Specialist Sławosz Uznański-Wiśniewski (iss073e0251659) (cropped)		Commons
commons	image		Axiom Mission 4 Mission Specialist Sławosz Uznański-Wiśniewski (iss073e0251659) (cropped2)		Commons
commons	image		ESA astronaut announcement Class of 2022 (52519424151)		Commons
commons	image		ESA astronaut announcement Class of 2022 (52519439276)		Commons
commons	image		ESA astronaut announcement Class of 2022 (52519439511)		Commons
commons	image		ESA astronaut announcement Class of 2022 (52519971813)		Commons
commons	image		ESA astronaut announcement Class of 2022 (52519438586)		Commons
commons	image		ESA astronaut announcement Class of 2022 (52519971813) (cropped)		Commons
commons	image		ESA astronaut announcement Class of 2022 (52519916125)		Commons