sunspots
noun#39,936
Translations
- 黒点こくてん
- 太陽黒点たいようこくてん
- 黒点周期こくてんしゅうき
English definition
- a cooler darker spot appearing periodically on the sun's photosphere
Examples
- Let's observe sunspots.
- The sun is currently in a period of low activity but even so large sunspots occasionally appear.