Smile Spacecraft Captures Unprecedented Daylight Auroras Over Earth’s North Pole

The joint European Space Agency (ESA) and Chinese Academy of Sciences (CAS) Smile mission has officially begun science operations, delivering its first striking images of Earth. Captured in ultraviolet light, the photographs reveal massive auroras writhing over the North Pole during broad daylight—a phenomenon rarely visible to the naked eye. The satellite, positioned approximately 75,000 miles away, documented a serpent-like ring of charged particles coiling around the planet’s northern hemisphere in July 2026.

Typically, auroras are observed only at night and remain confined near the poles, resulting from charged solar particles colliding with atmospheric molecules along Earth’s magnetic field lines. However, these debut images show the auroral activity spanning roughly a third of the sunlit side of the planet. In the foreground, Earth appears as a ghostly, featureless glow reminiscent of a half moon, while the dark nightside fades into the background where stars are visible.

Launched on May 19, Smile is designed to spend the next three years monitoring Earth from a highly elliptical orbit. This vantage point allows the spacecraft to observe the North Pole for up to 45 consecutive hours, providing an uninterrupted view of solar activity. Beyond the Ultraviolet Aurora Imager that captured these photos, the spacecraft carries three additional instruments to detect X-rays, magnetic fields, and light ions.

Scientists confirmed the health of the mission’s hardware earlier this week by testing the soft X-ray imager on Cassiopeia A, a supernova remnant located 11,000 light-years from Earth. While the detector is functional, engineers noted it remains slightly oversensitive when pointed toward Earth, necessitating further calibration before all instruments can be fully utilized for scientific study.