Four Class M flares have been recorded on the Sun.

Four penultimate class M solar flares have been recorded in the X-ray range. This was announced on December 10 on the website of the Institute of Applied Geophysics (FSBI "IPG").

"On December 10, at 02:27 Moscow time, an M1.5 flare lasting 20 minutes was recorded in the X—ray range in the group of spots 4296 (S18W46)," the publication says.

Three more Class M flashes followed later. All of them occurred in the largest sunspot complex of the year, consisting of regions 4294, 4296 and 4298.

Solar flares are classified by X-ray power into five classes: A, B, C, M, and X. Each class upgrade means a tenfold increase in radiation power. Such flares are often accompanied by solar plasma emissions, which can cause magnetic storms reaching the Earth.

The expert spoke about the decline in geomagnetic activity

Earlier, on December 8, the Laboratory of Solar Astronomy of the IKI RAS and the Institute of Solar-Terrestrial Physics of the Siberian Branch of the Siberian Branch of the Russian Academy of Sciences reported that a rare "black" flash occurred on the Sun at night. It was noted that the explosion tore apart and scattered a cloud of dense cold hydrogen over the Sun at a distance of about 1 million km.

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