SMILE Mission to Reveal Earth's Magnetic Shield in Unprecedented 3D Detail by 2026
SMILE Mission to Reveal Earth's Magnetic Shield in Unprecedented 3D Detail by 2026
SMILE Mission to Reveal Earth's Magnetic Shield in Unprecedented 3D Detail by 2026
A new space mission aims to unlock the secrets of Earth's protective magnetic shield. Scheduled for launch in spring 2026, the SMILE project will study how solar wind interacts with the planet's magnetosphere. Scientists believe this research could improve forecasts of extreme space weather and its potential to disrupt vital technology.
The SMILE mission is a joint effort between the European Space Agency (ESA) and the Chinese Academy of Sciences (CAS). Its instruments will orbit Earth to capture the first global 3D images of the magnetosphere—the strongest among rocky planets and a key factor in Earth's habitability. For comparison, Mars lost most of its atmosphere and surface water after its own magnetic field weakened.
The mission will focus on three main questions about the magnetosphere's shape, boundaries, and behaviour when struck by solar wind. Data collected could help predict space weather events that threaten satellite navigation, radio communications, and power grids. A single extreme event in Europe might cost up to €15 billion in damages.
The UK plays a leading role in SMILE, overseeing its science operations and the Soft X-ray Imager (SXI) instrument. Chelmsford-based firm Teledyne e2v is supplying the SXI's CCD detectors under a £1.5 million contract. UK researchers have already worked with the Met Office's Space Weather Operations Centre to prepare for analysing SMILE's findings once the mission begins.
SMILE's launch in 2026 will mark the first time scientists can observe Earth's magnetosphere in full 3D. The mission's data is expected to enhance space weather forecasting and reduce risks to critical infrastructure. With UK expertise guiding the project, the results will also shape future research into planetary magnetic fields and their role in sustaining life.