A massive solar magnetic filament erupted on October 16, 2023, at the active sunspot AR3467.
– The eruption was so powerful that it ejected a coronal mass ejection (CME), which is a huge cloud of plasma and magnetic fields from the Sun’s surface.
– The CME was captured by NASA’s Solar Dynamics Observatory (SDO) in multiple wavelengths, showing its speed, direction, and intensity.
– The CME is not heading directly for Earth, but it may deliver a glancing blow late on October 19, 2023.
– A glancing blow means that only a part of the CME will brush against Earth’s magnetosphere, while the rest will pass by. This could cause a minor geomagnetic storm.
– A geomagnetic storm is a disturbance in Earth’s magnetic field caused by solar activity. It can affect satellites, power grids, radio communications, and navigation systems.
– NASA has predicted a G1-class storm for October 19, 2023, which means that it will spark auroras and cause some disruptions for radio waves and communication devices.
However, the exact effects of the CME are still uncertain, as they depend on its speed, direction, and intensity. Some models suggest that it could be stronger or weaker than expected.
The CME was also observed by ESA/NASA’s Solar and Heliospheric Observatory (SOHO), which uses coronagraphs to block out the Sun’s bright disk and reveal its dark corona
– SOHO will soon reveal if the CME has an Earth-directed component or not. If so, it could increase the chances of a direct hit or a stronger storm.