| Clue | Source | Date |
|---|---|---|
| Phenomenon that emits X-rays | New York Times | 22 Feb 2019 |
| Phenomenon that emits X-rays | ||
| Source of radiation across the electromagnetic spectrum | The Washington Post | 01 Dec 2016 |
| Brightening near a sunspot | ||
| Sun's sudden energy release | ||
| Phenomenon that emits X-rays | ||
| Phenomenon that emits X-rays | ||
| Eruption on the sun | ||
| *Cause of problems in radio communication | ||
| Sudden brightening near a sunspot | ||
| Sun eruption |