The sun’s south pole has been captured for the first time, revealing its mysterious features through stunning images from the Solar Orbiter spacecraft. This collaboration between the European Space Agency (ESA) and NASA has provided a unique look at the sun’s polar regions.
Launched in 2020, the $1.3 billion mission recently obtained images while the spacecraft dipped about 15° below the solar equator. This is significant because the sun undergoes a magnetic polarity flip roughly every 11 years. Currently, the sun is at a solar maximum, which is when sunspots and solar flares become most active.
Initial findings show a complex mix of magnetic fields at the sun’s poles. This aligns with predictions made by computer models but is a new confirmation. Scientists believe understanding this chaotic magnetic activity is vital for predicting future solar behavior.
Professor Carole Mundell, ESA’s director of science, emphasized the importance of this discovery. "The sun is our nearest star and influences everything from satellite operations to power systems on Earth," she said. Grasping its workings is crucial for developing better forecasts.
Professor Sami Solanki from the Max Planck Institute noted that the sun’s magnetic field changes as it rotates. The equator spins quicker than the poles, twisting magnetic lines until they become unstable and flip. This dynamic is fundamental to solar activity.
According to Professor Lucie Green from UCL, observing these changes in the sun’s atmosphere can offer insights into its evolving nature. "The sun transforms from a calm star to an explosive one due to its magnetic field’s fluctuations," she explained.
Looking ahead, the next solar minimum is expected in five to six years, marking a period of lower activity. Currently, scientists struggle to accurately predict when the sun will peak again, highlighting the need for advancements in solar forecasting.
The Solar Orbiter will continue its mission, orbiting the sun at a tilt until December 2026, with further adjustments planned for the coming years. The previous mission to examine the sun’s poles was NASA’s Ulysses probe in 1990, which lacked imaging capabilities. The Solar Orbiter’s detailed images represent a leap forward in solar research.
For more detailed information, you can visit the European Space Agency’s official website.
Understanding the sun not only enriches our knowledge of space but also helps protect our technology and ways of life here on Earth.