A giant sunspot on the other side of the Sun is set to face Earth this weekend, and a geomagnetic storm could hit Earth.
The spot is so big it changes the way Sun vibrate, According to spaceweather.comWhen the dark spot throws a blob of plasma earthit can disrupt our magnetic field and affect GPS and communication satellites that orbit near the Earth, as well as the navigation systems of airplanes.National Oceanic and Atmospheric Administration (NOAA) Space Weather Forecast Center This could mean northern lights, but it’s not yet clear if it will turn into a full-blown solar storm.
Sunspots are dark spots on the surface of the Sun caused by strong magnetic fields. This sunspot is on the other side of the Sun, but scientists detected it by monitoring its effect on the Sun’s oscillations.
“The sun is constantly vibrating as bubbles of convection hit its surface,” Dean Pesnell, a project scientist at NASA’s Solar Dynamics Observatory (SDO), told Live Science in an email. Told. Bubbles of hot and cold air that continually rise and fall in the Sun move energy, causing oscillations that can be detected by solar observatories like SDO. The strong magnetic fields of sunspots slow these oscillations through the Sun. As a result, observatories like SDO can monitor sunspots on the far side of the star by delaying these oscillatory waves, even though they can only see the near side of the star, Pesnel added.
“The larger the sunspot and the stronger the magnetic field, the greater this delay,” says Pesnell.
A clear oscillating change has appeared in the heliquake map near the southeastern extremity of the Sun.
Sunspots will face Earth this weekend, solar flare — An intense radiation burst in the Sun’s atmosphere.
“As sunspots become visible rotating, we’ll probably see flares,” Pesnell said.
This solar activity can affect the Earth. A solar flare can heat a cloud of charged particles from the sun’s upper atmosphere to very high temperatures and release a huge blob of plasma at Earth. coronal mass ejection (CME). “Corona mass ejections can occur because there are filaments pointing in the direction of sunspots,” he added Pesnell.
“Solar flares and CMEs are the main ways solar activity affects the Earth,” Pesnell said. “According to my research, higher levels of solar activity mean that satellites orbiting near the Earth will experience increased drag. Loss of income.” Other possible effects of more serious “space weather” include disrupted communications and navigation in the polar regions (often used by intercontinental flights) and blackouts on Earth. There is even
The activity of the sun goes through an 11-year cycle, with distinct “solar maximum” and “solar minimum” periods when the number of sunspots is highest and lowest, respectively. The sun is currently heading for a solar maximum in 2024 or 2025. More active than NASA predictedAccording to Pesnel, CME is normal behavior for sunspots at this point in the sunspot cycle.
Originally published in Live Science.
Huge, potentially destructive sunspot will rotate to face Earth this weekend
Source link Huge, potentially destructive sunspot will rotate to face Earth this weekend