A butterfly-shaped coronal hole appeared on the Sun, as reported in solar activity updates.
The coronal hole, visible in solar imagery, has rotated into Earth's view, potentially influencing space weather. Coronal holes release high-speed solar wind streams. Monitoring by solar observatories confirmed the unique shape. No immediate geomagnetic storms were reported.
Observations
- Detected on September 11, 2025.
- Monitored for auroral activity.
This adds to ongoing solar cycle studies.