Up 太陽 : 磁気活動 作成: 2022-01-06
更新: 2022-01-06

NASA から引用：
The sun in a wavelength of extreme ultraviolet light
Each day NASA solar scientists produce overlays (in white lines) that show their estimation of how the magnetic field lines above the sun are configured (June16, 2016).
Notice how the lines are tightly bundled near the lighter-toned active regions, which are magnetically intense regions.
The magnetic lines from the darker areas, called coronal holes, open out into space and the extended lines show that.
Our magnetically active sun is a dynamic body that changes all the time.