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according to the wechat public account of "space weather", the solar coronal mass ejection activity has caused a huge impact on the solar eclipse.from 14:00 on september 12 to 08:00 on september 14, beijing time, the earth experienced a geomagnetic storm that lasted for a total of 27 hours.

among them, there was a large geomagnetic storm with a kp index of 7 for 6 hours. the geomagnetic storm has now ended and the earth's magnetic field is gradually recovering.

according to the national space weather monitoring and early warning center, it is expected that in the next three days, due to the combined influence of the coronal mass ejection and the coronal hole on the 11th, a small geomagnetic storm may occur on the 14th, geomagnetic activity may occur on the 15th, and geomagnetic activity will be calm to slightly disturbed at other times.

regarding geomagnetic storms, experts explained that geomagnetic storms are global and violent disturbances in the earth's magnetic field, and the magnitude of geomagnetic storms is characterized by geomagnetic indexes.

geomagnetic storms are the most representative global space environment disturbance events caused by high-speed plasma clouds reaching the earth's space. the intensity of geomagnetic storms can characterize the impact of high-speed plasma clouds in solar storms.

experts pointed out that geomagnetic storms have no impact on the human body, but they pose a threat to satellites, spacecraft, etc.

during the geomagnetic storm in february 2022, as many as 40 satellites of the starlink system of musk's spacex were damaged and fell.

the reason is that as magnetic storm activity gradually intensifies, the earth's upper atmosphere is continuously heated, expanding and spreading into higher space.

this creates additional resistance for the spacecraft flying in orbit, resulting in a deceleration effect similar to dragging, which can eventually cause the satellite or spacecraft to crash.