The European Space Agency’s Solar Orbiter has acquired the First images of Sun south pole. This accomplishment represents a significant advancement in solar observation. Up until now, the equatorial plane—the level path where planets orbit—was the only way for scientists to see the Sun.
The orbiter angled its trajectory 17 degrees below the Sun’s equator to obtain a different angle. Because of its special location, it was able to photograph an aspect of our star that was not visible.
ESA shifted the probe’s orbit by using Venus’ gravity. The Solar Orbiter gradually changed its angle by passing the planet in certain orbits. The spacecraft will tilt even more in subsequent orbits. This implies that there will be more lucid views in the future.
This is a historic moment, according to Dr. Hamish Reid, a UCL astronomer and mission co-investigator. For decades, we have been waiting to see the poles of the Sun. It’s essential to comprehending its magnetic field,” he stated.
3 instruments on the orbiter captured the photographs. The Polarimetric and Helioseismic Imager (PHI) used visible light to map the magnetic field at the Sun’s surface. In the outer atmosphere of the Sun, the Extreme Ultraviolet Imager (EUI) recorded extremely hot, charged gas. The Spectral Imaging of the Coronal Environment (SPICE) instrument measured light from different atmospheric temperature zones.
The Max Planck Institute’s Dr. Sami Solanki expressed surprise at these findings. “The poles are genuinely uncharted territory. We didn’t know what we would discover,” he said.
Magnetic Chaos and Future Solar Predictions
Approximately every 11 years, the Sun reverses its magnetic poles. The solar maximum is a time of intense activity brought on by this change. Particle waves and enormous solar flares are racing towards Earth during this time.
Satellites and power grids may sustain damage from these occurrences. However, scientists are still unable to pinpoint the precise time they will happen. Researchers now have the information they need to more precisely predict these changes thanks to the polar images.
The significance was explained by Professor Lucie Green, another astronomer at UCL and a co-investigator on the EUI. It’s important to observe the poles. It aids in our comprehension of how the magnetic field of the Sun operates throughout the entire star’, she said.
Early images reveal that the Sun’s south pole is in magnetic disarray. Instead of showing one magnetic direction, both north and south polarities are present. This mixed field only appears after a magnetic flip and marks the beginning of the solar maximum.
The magnetic fields will gradually settle over the next five years. This accumulation culminates in a time known as the solar minimum, when the north and south are clear.
The process of this transition is not entirely understood by scientists. However, they hope to solve this puzzle with the help of the Solar Orbiter’s new perspective.
High-latitude flows will soon be observed, according to Professor Green. These start the next solar cycle by transporting magnetic material to the poles.
Once concealed, the Sun’s poles now provide hints about the evolution of solar activity. These findings could help scientists reduce future solar risks to Earth’s technology.
