solar cycle

An image of the Sun is surrounded by 12 smaller Sun images. Each surrounding image has some spots on it, but the large central image has the most dark spots. Please see the explanation for more detailed information.
一幅太阳图像周围环绕着12幅较小的太阳图像。每幅外围图像上都有一些太阳黑子，但中央的大图像上的太阳黑子最多。有关更多详细信息，请参阅说明。

2023年7月11日 Sunspots on an Active Sun Image Credit: NASA, SDO; Processing & Copyright: Şenol Şanlı Explanation: Why is our Sun so active now? No one is sure. An increase in surface activity was expected because our Sun is approaching solar maximum in 2025. However, last month our Sun sprouted mo