Increased solar activity: Are magnetic storms threatening Earth?
The Jeddah Astronomical Society announced that it has observed a significant increase in solar activity, with the sun's disk adorned with a large number of sunspots, indicating that our star is approaching the peak of its 11-year cycle. This increased activity raises the possibility of powerful solar flares and geomagnetic storms that could affect Earth, but the society confirmed that there is no cause for concern regarding the daily lives of residents.
Understanding the solar activity cycle and its effects
The Sun operates on a regular activity cycle that lasts approximately 11 years, transitioning from a period of relative calm known as the "solar minimum" to a period of intense activity called the "solar maximum." We are currently in solar cycle 25, which began in December 2019 and is expected to peak in mid-2025. Sunspots, cooler and darker regions on the Sun's surface, are the primary indicator of this activity. These spots are actually regions with highly complex magnetic fields, and when the lines of these fields become entangled and erupt, they release enormous amounts of energy in the form of solar flares or coronal mass ejections (CMEs).
Magnetic storms: from space to Earth
When these solar flares head towards Earth, they can interact with our planet's magnetosphere, causing what are known as geomagnetic or magnetic storms. The head of the association, Engineer Majed Abu Zahra, explained that these storms are not dangerous to humans on Earth's surface thanks to the protection of the atmosphere and the magnetic field. However, their impact is primarily on the modern technology we rely on. Severe storms can disrupt satellite signals, affecting GPS, satellite communications, and television broadcasting. They can also pose a threat to electrical power grids in high latitudes and, in very rare cases, may lead to widespread power outages.
Is there cause for concern in our region?
Abu Zahra reassured residents of the Arab region that the direct effects of these phenomena are almost nonexistent. Most solar storms pass unnoticed by the general public. The most beautiful and common effect of these storms is the aurora borealis (northern lights), which becomes visible in areas further south during intense storms. Although seeing it in the skies of the Arab region is extremely rare, increased solar activity increases this already slim chance. He emphasized that relevant authorities and international space agencies monitor the sun around the clock, allowing them to predict potential storms and take the necessary measures to protect satellites and critical infrastructure, as well as ensure the safety of astronauts on missions such as the upcoming Artemis mission.
