Solar Orbiter captures high-resolution images of the Sun, unveiling new mysteries | See pics

The Solar Orbiter mission has captured the highest-resolution images of the Sun’s surface ever taken, revealing stunning details such as sunspots and shifting plasma. These images, collected on March 22, 2023, offer a unique glimpse into the sun’s dynamic nature, with high-definition views of its magnetic fields and outer corona.

The spacecraft, a collaboration between NASA and the European Space Agency, used advanced imaging instruments to provide crucial insights into solar activity. These observations are expected to help scientists answer key questions about the sun's behaviour, shedding light on phenomena like solar wind and the mysteries of the corona's extreme heat.

Solar Orbiter’s advanced imaging instruments capture closest images of sun

The Solar Orbiter, a joint mission by NASA and the European Space Agency, used two of its imaging instruments—the Extreme Ultraviolet Imager (EUI) and the Polarimetric and Helioseismic Imager (PHI)—to capture the images from 46 million miles away.

The Polarimetric and Helioseismic Imager (PHI) has produced the highest-resolution full views of the sun's photosphere, the visible surface from which nearly all of the sun's radiation emanates. Temperatures here range from 8,132 to 10,832 degrees Fahrenheit (4,500 to 6,000 degrees Celsius). Beneath the photosphere, hot plasma moves through the sun’s convection zone, much like Earth's mantle magma.

The spacecraft's proximity to the sun allowed it to map the photosphere, the sun’s visible surface, and its dynamic magnetic fields in unprecedented detail. These new images reveal key features of the Sun's surface, such as sunspots—dark, cooler regions driven by the Sun's intense and shifting magnetic fields.

Scientists also used a "tachogram" to observe the speed and movement of material on the sun’s surface, with blue indicating movement toward the Solar Orbiter and red showing material moving away. Meanwhile, the Extreme Ultraviolet Imager (EUI) looks at the sun's corona, revealing why it’s much hotter than the photosphere, reaching temperatures of 1.8 million degrees Fahrenheit (1 million degrees Celsius).

Each image is a composite of 25 individual shots, taken as the spacecraft rotates to capture all aspects of the sun. Mark Miesch, a scientist at NOAA's Space Weather Prediction Center, emphasised the value of these high-resolution images for studying the sun's complex interactions, from large-scale magnetism to smaller surface features.

Solar Orbiter and Parker Solar Probe: Collaborative missions to unlock solar mysteries

The Solar Orbiter and NASA’s Parker Solar Probe are working together as part of a larger effort to understand the origins of space weather, which can significantly affect Earth. The Parker Solar Probe is set to make the closest-ever approach to the Sun, coming within just 3.86 million miles of its surface. This will provide even more direct insights into solar activity.

Together, these missions are pushing the boundaries of solar science, shedding light on the sun's behaviour, space weather, and its impact on Earth. With each new discovery, the Solar Orbiter and Parker Solar Probe are offering clues that will help unlock the mysteries of our star and its role in the solar system.




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