‘Smile’ Space Weather Satellite Launches With Swiss Technology Onboard

The international Smile space mission is preparing for launch with important technology developed in Switzerland playing a key role in the satellite’s success.

The Smile satellite — short for Solar wind Magnetosphere Ionosphere Link Explorer — is scheduled to launch on May 19 at 05:52 Swiss time. The mission aims to improve scientific understanding of solar storms and space weather that can affect satellites, navigation systems, and even power grids on Earth.

The project is a collaboration between European and Chinese space agencies and includes contributions from Swiss researchers and technology companies.

According to André Csillaghy from the University of Applied Sciences Northwestern Switzerland (FHNW), the launch is both exciting and stressful for the engineering teams involved.

Swiss researchers developed crucial software systems and a key cooling component for the satellite’s advanced X-ray telescope. Without this technology, the telescope would not function properly in the harsh conditions of space.

The Swiss cooling system, known as the “Rocket Science radiator,” was designed and tested at FHNW in Windisch. Its purpose is to keep the telescope detectors at extremely low temperatures of around -110°C, allowing the instruments to operate accurately.

The satellite’s mission is focused on studying interactions between solar winds and Earth’s magnetic field. Charged particles from the sun travel toward Earth at extremely high speeds and interact with the planet’s protective magnetosphere.

Scientists hope Smile will provide valuable new data about space weather, which can disrupt communication systems, satellites, GPS networks, and electricity infrastructure during strong solar storms.

The spacecraft carries four major scientific instruments, including an X-ray camera, ultraviolet camera, ion spectrometer, and magnetometer. One of the mission’s biggest goals is to create the first detailed visualisation of Earth’s magnetic field using advanced X-ray imaging technology.

The Swiss engineering team has spent nearly eight years working on the mission together with partners from the Zurich University of Applied Sciences, KOEGL Space, and Space Acoustics.

Experts say the Smile mission highlights Switzerland’s growing importance in international aerospace research and advanced scientific technology development.