SPACE PROJECT SST-6 (2nd Mission)


SPACE PROJECT SST-6  (2nd Mission)

The Space Project SST-6 (2nd Mission, Swiss Space Tourism-6) consists of the organization and realization of a suborbital flight, as part of a scientist, medical and educational program to pay more attention to space and related sciences.

A total of 6 Crew Members will be presented to partners/sponsors/schools/universities/enterprises/companies/interested persons in order to be able to launch the Spaceship in 2024-2025.

The 1st seat will be occupied by the Mission Commander, Boris OTTER, who will supervise the various scientist, medical and educational experiments planned before, during and after the flight, such as the study of the symptoms linked to space sickness, the impact of the Overview Effect on return to Earth, the effect of Weightlessness over a period of 3-4 minutes.


SST-6  CREW COMPOSITION  (2nd Mission).


Mission Commander, Space Project SST-6  (2nd Mission).











2)  The Mystery ASTRONAUT  (EUROPEAN).

Co-pilot, Space Project ST-6  (2nd Mission).

He is represented by our “paper Astronaut”  Tania BRADLEY.





















Mission Specialist 1, Space Project SST-6  (2nd Mission).





















Mission Specialist 2, Space Project SST-6  (2nd Mission).


















5)   Tanja LEHMANN  (GERMANY).

Mission Specialist 3, Space Project SST-6  (2nd Mission).









Mission Specialist 4, Space Project SST-6  (2nd Mission).
























1)  Boris OTTER,  Mission Commander.

  • Assumes the rule of Mission Commander, supervising scientist, medical and educational experiments before, during and after this SST-6 Mission.
  • Trained as a civilian pilot (qualified on airplane, helicopter piston and turbine, seaplane, gyrocopter, 2 flights in Russian fighter planes Let-39 and Sukhoï-27 Flanker, 3 Private Cosmonaut Training sessions at the Gagarin Cosmonaut Training Center in Moscow, Aerobatic qualification (ACR), Night Flight (NF), Visual Flight Rules (VFR), Instrument Rating (IR), multi-engine piston (MEP), Airline Transport Pilot License “Frozen”, skydiving, paragliding, PADI Advanced Open Water Diver, glider.
  • Very advanced professional experience in the field of Security and Rescue, essential for the human and scientist success of the mission : 7 years of experience as a volunteer Firefighter and 6 years as a Professional Firefighter by SIS Geneva (Switzerland).
  • Popularization of Space experiences for educational purposes to international institutions, media, universities and schools.
  • Federation of skills, Space and international experiences for humanitarian, scientist, medical and cultural purposes (International Crew with suitable profiles to achieve the objectives of the Missions).


2)  The Mystery ASTRONAUT,  Mission Co-pilot.

He is represented by our “paper Astronaut”  Tania BRADLEY !

  • Performs the rule of Co-pilot, flight safety coordination with the Commander.
  • Tania BRADLEY, alias our Mystery ASTRONAUT, will be in charge of the survival systems and life support system training of the Crew, the Overview Effect description, and the study of the Space sickness.

Note: the Mystery ASTRONAUT is a European citizen, very well known in his country in the field of Space, but for personal and professional reasons, he asked us that his identity be revealed only when the budget for the Mission has been finalized ! We respect his choice and only the Crew Members flying with him will be informed.


3)  Régis SIBILLE,  Mission Specialist 1.

Here is the amazing biography of Régis :

“My name is Régis SIBILLE, Belgian, borned in December 1968 during the golden age of Apollo adventure. I started to be interested in Space in 1975 when I watched Apollo – Soyuz mission on TV and discovered Star Trek. That year, I told my father I will become an astronaut but he answered me that I was borned too early and I had no chance of realizing my dream. I was disappointed but… nevermind. Maybe later… And now, with the emergence of companies such as Virgin Galactic, Blue Origin, I know the dream could come true. I want to be ready for that day and I’ve trained as much as possible these last years, flying a MiG-15 fighter to test my resistance to strong acceleration, flying twice zero-G flights, the first one in France in 2018 with Thomas Pesquet and the second one in Florida in 2021 with Moonwalker Charlie DUKE. I also visited Star City in Moscow, testing the centrifuge, spending time in the Soyuz simulator and trying a Sokol spacesuit. I also visited many places in the world such as Cap Canaveral, Baïkonour, Kourou, Toulouse… I’m a member of Mars Society Belgium and I also give presentations on space in schools in Belgium. I believe space exploration is the future of humanity and I try to show to the younger generation the importance of this adventure”.

Régis SIBILLE will be in charge of the study of the symptoms linked to space sickness, the impact of the Overview Effect on return to Earth and the effect of Weightlessness over a period of 3-4 minutes.


4)  Simon KÄLIN,  Mission Specialist 2.

Here is his fantastic biography :

“Simon Joel Kälin is studying medical technology in Switzerland and wants to become an explorer and researcher in extreme environments. In 2020, he started his service for the Swiss Army in the CBRN forces. He was promoted to the rank of sergeant and was serving as group leader within the SIBCRA unit. In 2023, he started his training with SWISSINT, the Swiss command for international peacekeeping missions. Since the age of 18 he has served as a volunteer firefighter within the SCBA unit and was promoted to the rank of corporal. Simon became an analog astronaut as a medical officer during the SOLARIS Mission with the AATC . In 2021, Simon became part of the Asclepios Space Mission in Lausanne as Science Officer during Asclepios II and Design Officer during Ascelpios III. He participated in public outreach, among other things, as a speaker at the Swiss Space Museum and in the national science broadcast of Switzerland “SRF Einstein”. In 2022, Simon graduated as the first Swiss citizen from the IIAS as a Scientist-Astronaut Program Graduate. Simon worked part-time as a case manager in the medical emergency center for air and ground-based medical repatriation back to Switzerland. In addition to his studies, he is now working at the University Hospital in Zürich in the medical technology department. Simon is a rescue and free diver and is currently pursuing his cave diving certification at GUE”.

Simon KÄLIN will be in charge of the study of the symptoms linked to space sickness, the impact of the Overview Effect on return to Earth and the effect of Weightlessness over a period of 3-4 minutes.


5)  Tanja LEHMANN,  Mission Specialist 3.

Here is a resume of Tanja’s experiences regarding Zero-G and Space :

Zero-G flight history :
– 2002 first flights with 5th ESA Student Parabolic Flight Campaign.
– 2002 – 2004 instructor for Austrian Parabelteam (overall participation in 11 flights as an instructor with responsibilities for taking care of passengers and also partly taking the flight photos). She even has a testimonial for that one, but it is in German).
– 2012 a Zero-G flight in the USA (recreational).
– 2015 participation in the 63rd ESA parabolic flight campaign for Mars Society Germany on one flight, evaluating the deployment mechanism for the Mars Society’s planned Mars ballon ARCHIMEDES  (more here : and the engineering model MIRIAM-2 ( Here she was responsible for the planning, coordination, documentation and for testing during the flight.
– 2017 participation in the 68th ESA parabolic flight campaign, repetition of the test from 2015 with the same responsibilities and additional negotiation and contact with ESA GSTP program for getting this flight funded (2015 was self-funded by the flight participants).
During a 2nd flight in this campaign, she was test subject for a student experiment that studied the balance system and muscle responses in variable gravity conditions.
– 2018 participation in an ESA partial gravity parabolic flight campaign (0.25, 0.5 and 0.75 g parabolas), for the same student team as during the previous campaign.
– 2019, 2021 and 2022 she took part in discovery flights with Air Zero-G (Novespace), these 3 flights were all recreational.

Apart from that, she took part in the V-ERAS 1 mission from Italian Mars Society, which was a virtual reality simulation of a Mars mission. Details are here:

Besides that she is still conducting a study on her own behalf about Zero-G flashbacks :

Also she is a member of the VFR (Verein zur Förderung der Raumfahrt e.V., Association for promotion of spaceflight,, Mars Society Germany e.V. and Internationaler Förderkreis für Raumfahrt (International supporting circle for spaceflight, For VFR she is a speaker for presentations and for the Mars Society she is acting as vice president and as test engineer (although these are all honorary and her real job is full-time test engineer at Diehl Aviation Gilching GmbH).

Tania LEHMANN will be in charge of the study of the symptoms linked to space sickness, the impact of the Overview Effect on return to Earth and the effect of Weightlessness over a period of 3-4 minutes.


6)  Enrique GUZMAN, Mission Specialist 4.

“Enrique GUZMAN has been passionate about aviation and human space exploration since his childhood.
Born in Bolivia, he studied in the American Institute before serving in the Bolivian Navy as a pre-military recruit.
He was selected for a scholarship allowing him to study Mechanical and Aerospace Engineering, at the École Polytechnique Fédérale de Lausanne (EPFL), where he obtained his PhD in 2014, writing a thesis on the use of structural health Monitoring in large CFRP aerospace structures. During his studies, he notably contributed to the design and testing of SwissCube.
After a post-doctoral position in the frame of ESA’s Design for Demise (D4D) initiative in 2015, he started working as an engineering consultant for several companies across various industries (aerospace, railway, power electronics). He currently works at as a Test Engineer at Dufour Aerospace.
He has developed a broad range of skills, in particular mechanical design and flight test engineering, being a member of the Society of Flight Test Engineers (SFTE), and is currently a PoSSUM Citizen-Astronaut Candidate.
Regarding his private activities, Enrique has enjoyed flying since the obtention of his EASA Private Pilot License PPL in 2011, having earned some additional ratings since.
He is also a scuba diver, a Licensed triathlete and triathlon referee at Swiss Triathlon, avid about outdoor activities, a certified First Aid Responder and a member of the Mars Society Switzerland”.

Enrique GUZMAN will be in charge of the study of the symptoms linked to space sickness, the impact of the Overview Effect on return to Earth and the effect of Weightlessness over a period of 3-4 minutes.



  • Secure and participate in the democratization of Spaceflight.
  • Participate in the advancement of scientific and medical research by :
  • Studying symptoms linked to Space sickness.
  • The study of the impact of the Overview Effect upon return to Earth, it is a feeling and a unique awareness to follow up on the view of the Earth from Space by the Astronauts.
  • The study of the effect of Weightlessness on all Crew Members of the SST-6 Missions.
  • Promote the development of other Space Missions as well as flights to Mars currently being prepared thanks to this unique feedback.



  • Composition of the Crew : completed !
  • – Mission Commander and Co-pilot : completed !
  • – 4 Mission Specialists : completed !
  • 6 Backup Crew : will be represented by the Crew Members of the 1st Mission !
  • Flight preparation : in progress !
  • Spaceship being used : in progress (Blue Origin, in progress, Virgin Galactic, China Rocket ZK-6) !
  • Search for financial partners and sponsors : in progress !
  • Lift-off planned as from : 2024-2025.

In command of a Military Russian Fighter, the Sukhoï-27 Flanker.

Zero-G Flight in the Ilyushin-76 MDK (10 parabolic flights of 25-28 seconds of weightlessness each).

Instruction in scale model 1/1 of the Space Station MIR.

Instruction in scale model 1/1 of ISS International Space Station.

Training of the vestibular system on the rotating chair (30 turns per minute).

Simulator for docking a Soyuz capsule to the ISS.

Training on the Sokol spacesuit.

Soyuz simulators hall visit.

Visit of the International Space Station hall.

Visit of the MIR Space Station hall.

Medical visits by the Gagarin Cosmonaut Training Center physicians.

Photo Copyright by L’Illustré. Photograph Blaise Kormann.

Virtual Flight Simulator of the Mi-8 Heavy Helicopter.

Virtual Flight Simulator of the Boeing 737-500.

In command of a Training Jet Let-39.

Fly on board a Swiss military training aircraft Pilatus PC7

Fly on board a Swiss military training aircraft Pilatus PC7