On Friday, February 21, a near-last class M flare occurred on the Sun. This was reported by the Institute of Applied Geophysics (FSBI "IPG").
On February 21 at 15:15 Moscow time, an M3.3 flare with a duration of 14 minutes was recorded in the X-ray range.
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 at Earth's orbit of 10 nW per 1 sq. m.
Solar flares of class M are medium flares from the so-called large ones. In total, there are five categories in their gradation. But they cause radio interference on the daylight side of the Earth from a slight to moderate level.
Read more on the topic:
Two strong flares occurred on the Sun
A coronal hole on the Sun is again threatening the Earth: an increase in the solar wind is expected
"The Sun is starting to scare": the star "fired" eight strong flares in a day
Now on home
Start of deliveries scheduled for 2027
Over 51,000 new motorcycles were sold in Russia in 2025
The car will take at least a year to assemble
The application's audience has reached 20 million users
The model will be included in the list of cars for taxis, price - from 2.25 million rubles
All parking lots of the "Administrator of the Moscow Parking Space" are connected to the service
The cars will be supplied to the Moscow Transport Service Directorate
Deliveries to India may begin in 2028
The technology provides automated search for all types of defects in power units
The plane flew 500 km, accelerating to 425 km/h
The plant stated that the information about the termination of purchases for models 6 and 8 is not true
Scientists are using the "Ekran-M" installation