Wednesday, August 20, 2025

Huge prominence eruption


 A huge prominence erupts from South-East limb in early hours of August 20, 2025. Day earlier, this region produced a major M-class flare. Such large prominence eruptions could be associated with a major geomagnetic storms impacting Earth's global infrastructure and satellites. This time, however, no geomagnetic storm is expected as the coronal mass ejection associated with this prominence eruption would miss the Earth. These observations are taken by GONG station at Learmonth, Australia. Erupting prominences (filaments on the disk) are closely associated with the coronal mass ejections - the major source of space weather.

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Two large sunspots on the Sun

The solar activity continues decreasing  as the Sun enters the declining phase of cycle 25. It may still produce large sunspots. One of such...