A joint European-Chinese satellite just went up on Vega-C, and the images it returns could change how scientists understand Earth’s magnetic shield

Key Points:

• The Solar wind Magnetosphere Ionosphere Link Explorer (Smile), a joint European-Chinese satellite, successfully reached orbit on 19 May 2026 to image Earth’s magnetic shield in X-rays for the first time, enhancing space weather science amid heightened solar activity.
• Smile carries four instruments, including ESA’s novel Soft X-ray Imager, to observe the interaction between solar wind and Earth’s magnetosphere from outside the system, providing a wide-angle view of this largely invisible boundary.
• After a 25-day orbit adjustment phase to a highly elliptical polar orbit, Smile will begin science operations around three months post-launch, with a planned mission duration of three years.
• The mission highlights rare ESA-Chinese Academy of Sciences collaboration amid geopolitical tensions, with Smile integrating Chinese and European hardware and launched on Europe’s Vega-C rocket operated by Italian firm Avio.
• Smile’s observations aim to improve understanding and forecasting of geomagnetic storms, which can disrupt communications, power grids, and satellite operations, offering critical data for operational space weather forecasting during the ongoing active solar cycle.