The Sun appears as a warm yellow sphere with a glowing, chaotic surface. Bright yellow arcs radiate from its equator, while darker regions are noticeable near the south pole. The yellow glow varies in intensity, extending to the edges of the image, where both bright arcs and darker areas are visible.
In this detailed image, you can observe hot plasma—charged particles—interacting within the Sun’s chaotic magnetic field. Look closely to spot the glowing coronal loops surrounding active regions and the darker, cooler filaments and prominences that add to the Sun's intricate tapestry.The High-Resolution imaging process
Capturing such a detailed image is a remarkable achievement. On March 9, 2025, Solar Orbiter positioned itself 77 million kilometers from the Sun to map the surface using a 5 x 5 grid approach. The Extreme Ultraviolet Imager (EUI) took six high-resolution images and two wide-angle views at each grid point. The final composite image is a stunning assembly of 200 individual photographs, presenting the widest high-resolution view of the Sun to date.
A collaborative effort
Solar Orbiter is the product of an international collaboration between the European Space Agency (ESA) and NASA. The EUI instrument, which played a crucial role in this imaging feat, is led by the Royal Observatory of Belgium.
RoCS's role in the Solar Orbiter mission
The Rosseland Centre for Solar Physics (RoCS) contributes significantly to the Solar Orbiter mission. By developing advanced observational techniques, RoCS enhances the spacecraft's ability to capture high-resolution images of the Sun. Their collaboration with international partners fosters knowledge exchange in solar research, ultimately advancing our understanding of solar phenomena and their impact on space weather.