Due to powerful solar flares on the morning of December 30, residents of Moscow and St. Petersburg may see the Northern Lights on New Year's Eve. However, the probability of this phenomenon is not very high, noted the head of the Solar Astronomy Laboratory of the Institute of Space Research (IKI) of the Russian Academy of Sciences, Sergei Bogachev.
According to him, the probability of the Northern Lights on New Year's Eve in Moscow is 20%, in St. Petersburg — about 40%, in the Murmansk region — 70%.
But the situation is very dynamic. It can swing in any direction. On the Sun, on the morning of December 30, there were two class X flares. They will reach Earth in the middle of the day on December 31 and cause auroras that can be observed on New Year's Eve.
The expert clarified that, depending on the power of X-ray radiation, solar flares are divided into five classes: A, B, C, M and X. The minimum class A0.0 corresponds to a radiation power of 10 nW per 1 m² in Earth orbit. When moving to the next letter, the power increases tenfold.
On Sunday, December 29, 15 powerful flares were recorded on the Sun, one of which also reached the strongest class — X.
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