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Solarstratos

Are you ready to flirt with the edge of space?

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News

We did it ! Over 9,500 Meters

The Record-Breaking Flight of August 12 is Making Global Headlines On August 12, 2025, SolarStratos turned a new page in […]

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SolarStratos Makes History: 9,521 Meters Reached Using Only Solar Power

On Tuesday, August 12, 2025, from Sion Airport in Switzerland, eco-explorer Raphaël Domjan piloted the HB-SXA aircraft to an altitude […]

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Successful Preparatory Flight at 6,589 m!

On the eve of August 1st, the SolarStratos mission achieved a highly successful preparatory flight. Despite less-than-ideal conditions on Thursday, […]

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The challenge

Travelling to the edge of the planet using only renewable energy

The aim is to protect our planet’s climate from greenhouse gases by demonstrating that concepts and projects that seemed inconceivable a short time ago are now possible with the technologies available today.

The plane

Stratospheric solar airplane

The team

A team of passionate and highly specialised people

Multi-skilling is a must in such an experimental project. The team consists of a mix of aeronautical engineers, pilots, builders and others.

Partners

SolarStratos is supported by numerous Swiss companies

The team aims to be international, but is committed to its national roots.

Be part of it

Experience this 21st century eco-exploration

By becoming a member of the “SolarStratos” club, you help promote and support our challenge.