The provided text is a summary of an unusual geomagnetic storm event. The key points are:
1. A large CME (coronal mass ejection) from Comet Atlas caused a G4 geomagnetic storm.
2. The storm resulted in spectacular auroras visible for over 18 hours across multiple hemispheres.
3. Many viewers reported seeing strange circular formations or rings in the sky during the event.
4. Photos and videos were shared from various locations showing these unusual ring-shaped anomalies, which some speculated could be caused by an electromagnetic pulse interacting with Earth's atmosphere.
5. The storm also coincided with increased earthquake activity, including a 6.2 magnitude quake off Costa Rica.
6. The summary mentions ongoing monitoring of seismic activity at Yellowstone and power outages in Maine due to high winds.
Overall, the text describes an intense geomagnetic event that caused striking natural light displays and sparked public interest and speculation about its causes.