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Marco Sieber to become Switzerland's second-ever astronaut
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Marco Sieber to become Switzerland's second-ever astronaut

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© 2025 IamExpat Media B.V.
© 2025 IamExpat Media B.V.
Apr 23, 2024
Jan de Boer

Editor at IamExpat Media

Jan studied History at the University of York and Broadcast Journalism at the University of Sheffield. Though born in York, Jan has lived most of his life in Zurich and has worked as a journalist, writer and editor since 2016. While he has plunged head-first back into life in Switzerland since returning to the country in 2020, he still enjoys a taste of home at pub quizzes and karaoke nights.Read more

Marco Sieber from Biel / Bienne, Canton Bern has been selected as an astronaut for the European Space Agency (ESA), the organisation confirmed on April 22. The 35-year-old becomes the second-ever Swiss astronaut in history and hopes to be the first man from the alpine nation to walk on the moon.

Marco Sieber selected to be an ESA astronaut

Speaking to 20 Minuten, Sieber said that the announcement was “a dream come true.” The Bernese has been in training with the ESA for a year, but on Monday it was confirmed that he would be one of the six applicants to actually become the next generation of astronauts - 22.500 people originally applied.

Sieber explained that the last year has seen him and his colleagues complete basic training, which includes extensive lectures and courses in biology, medicine, physics, mechanics and technology. While Sieber is set to be the first Swiss in space since Claude Nicollier in 1999, he isn’t the only new astronaut with an alpine connection: Belgian astronaut Raphaël Liégeois worked at EPF in Lausanne and the University of Geneva as a neuroscientist before joining the programme.

Who is Marco Sieber, Switzerland's second astronaut?

After graduating from high school in 2007, Sieber joined the Swiss Special Forces as a paratrooper in 2009. He would go on to become a doctor, serving in the Swiss Army’s deployment in Kosovo before working as a helicopter rescue doctor and a urologist at a hospital in Biel / Bienne. In his spare time, Sieber became a licenced pilot and accomplished skydiver.

Speaking to 20 Minuten, the new astronaut said while he was always fascinated by the stars he never thought he’d be given an opportunity to fly there. “Becoming an astronaut has always been a dream for me,” he confirmed.

Now, Sieber will continue his training as an ESA astronaut, before flying to the International Space Station between 2026 and 2030 to conduct scientific research. However, Sieber confirmed that he wanted to reach further for the stars in the future, noting that “landing on the moon one day is a goal.”

Thumb image credit: ©ESA; P. Sebirot

By Jan de Boer