太阳极小期和太阳极大期
(原标题: Solar Minimum versus Solar Maximum)
2023-12-11
浏览次数: 17
太阳的表面一直在变化。有些年份是安静的，显示出相对较少的太阳黑子和活跃区域。在其他年份，它会出现大量的太阳黑子，并频繁地抛出日冕物质抛射（cme）和耀斑。由于受到磁场的影响，我们的太阳表面每11年经历一次相对平静的时期，即太阳极小期和相对动荡的时期，即太阳极大期。左边是2019年末太阳活动极小期附近的一个月，右边是2014年太阳活动极大期附近的一个月。这段视频是由美国宇航局的太阳动态观测站在远紫外光下拍摄的。我们的太阳将在2025年再次走向太阳活动极大期，但即使是现在，太阳表面的活动也惊人地高。夜空网络研讨会：APOD编辑将回顾2023年最酷的太空图像
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The surface of our Sun is constantly changing. Some years it is quiet, showing relatively few sunspots and active regions. Other years it is churning, showing many sunspots and throwing frequent Coronal Mass Ejections (CMEs) and flares. Reacting to magnetism, our Sun's surface goes through periods of relative calm, called Solar Minimum and relative unrest, called Solar Maximum, every 11 years. The featured video shows on the left a month in late 2019 when the Sun was near Solar Minimum, while on the right a month in 2014 when near Solar Maximum. The video was taken by NASA's Solar Dynamic Observatory in far ultraviolet light. Our Sun is progressing again toward Solar Maximum in 2025, but displaying even now a surface with a surprisingly high amount of activity. Night Sky Network webinar: APOD editor to review coolest space images of 2023