The Solar wind Magnetosphere Ionosphere Link Explorer (SMILE) released its first batch of scientific images and data on Wednesday, marking the satellite’s transition into regular science operations. Jointly developed by China and Europe, the mission captures continuous panoramic views of the northern lights and measures magnetic fields in high Earth orbit.
First Panoramic Images of the Northern Lights and Stellar Remnants
The newly released data includes the first continuous panoramic image of the northern lights, detailing their fine structure over extended periods. Another captured image reveals the glowing remains of a star that exploded roughly 160,000 light-years away. In addition to these visual observations, the satellite collected high-resolution measurements of magnetic fields and ions in Earth’s very high orbit.
Scientists working with the mission state that these early results are very promising. The collected data will help researchers better understand how solar activity influences Earth’s space environment.
Orbit Entry and Mission Timeline
SMILE launched on May 19 from French Guiana. Following approximately a month of orbital adjustments, the spacecraft reached its working orbit on June 20. Mission operators then switched on all instruments, which operated normally during subsequent calibration phases before the satellite began collecting valid scientific data.
The mission represents the first mission-level, all-round, and in-depth collaborative space science exploration project between China and Europe. Its primary objective is to reveal the mechanisms behind the interaction between the solar wind and Earth’s magnetosphere.
Specialized Instruments Aboard the Satellite
Four scientific instruments aboard the spacecraft gathered the newly released images and data. SMILE carries the world’s first spaceborne soft X-ray imager (SXI), designed to image the previously invisible boundary of the magnetosphere. Additional instruments include an ultraviolet auroral imager (UVI), a light ion analyzer (LIA), and a magnetometer (MAG).
These instruments enable simultaneous global-scale imaging of magnetospheric changes alongside direct measurements of solar wind conditions at the satellite’s location. This combination provides researchers with a tool for studying space weather events such as magnetic storms and substorms.
Bilateral Collaboration Between China and Europe
The SMILE project originated from a cooperative initiative launched jointly by the Chinese Academy of Sciences and the European Space Agency in 2015. The partnership established an equal, mutually beneficial, and complementary mechanism for cooperation.
China assumed full responsibility for satellite platform development, telemetry and control, ground support, and the construction of science application systems, while also leading the development of the UVI, LIA, and MAG payloads. The European side managed the payload module and SXI development, alongside providing the launch vehicle, launch site, and active-phase telemetry and control support.
SMILE mission origins and scientific instruments
When did SMILE begin regular science operations?
The satellite entered regular science operations and released its first batch of scientific images and data on Wednesday.
Which agencies developed the SMILE mission?
The mission is a joint project between the Chinese Academy of Sciences and the European Space Agency, originating from a 2015 cooperative initiative.
What are the primary instruments on the satellite?
SMILE carries a soft X-ray imager (SXI), an ultraviolet auroral imager (UVI), a light ion analyzer (LIA), and a magnetometer (MAG).
Where was the satellite launched from?
The spacecraft launched on May 19 from French Guiana before reaching its working orbit on June 20.
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