Yesterday, an X2 class flare occurred on the Sun. Its source was sunspot group No. 3184. As AstroAlert reports, this
Solar flares dependingBased on the power of X-ray radiation, they are divided into five classes: A, B, C, M and X. The minimum class A0.0 corresponds to a radiation power in Earth's orbit of 10 nanowatts per square meter. When moving to the next letter, the power increases 10 times.
If the flare leads to a coronal mass ejection, then it will “fly” past the Earth. This means that interruptions in radio communications are not expected, as are auroras.
A coronal mass ejection (CME) is aa giant cloud of solar plasma, permeated with magnetic field lines, that spreads from the Sun during strong, long-lasting solar flares and filament eruptions. Typically, such emissions lead to auroras, which are formed due to streams of high-energy charged particles. The planet's magnetic field protects the planet from cosmic radiation, but it is weaker at the North and South Poles, allowing the solar wind to glide through the atmosphere—typically 100 to 300 km above the Earth's surface. According to NASA, when solar particles pass through the atmosphere, they superheat the gases, which then glow brightly in the night sky.
Auroras most often appear green,because oxygen atoms, of which there are many in the part of the atmosphere where it usually flies, emit this hue when excited. However, last year two pink auroras were observed (in November and December), Hi-Tech wrote about them earlier.
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