Sizeof EarthSunspots太阳黑子Coolerregions of thephotosphere(T~4240K)光球层相对较冷的区域Onlyappeardarkagainstthebright sun.Wouldstill be brighter thanthe full moon when placed onthe night sky!背景亮，显得暗。放在夜空比月亮还亮
Sunspots太阳黑子 Cooler regions of the photosphere (T ≈ 4240 K). 光球层相对较冷的区域 Only appear dark against the bright sun. Would still be brighter than the full moon when placed on the night sky! 背景亮，显得暗。放在夜空比月亮还亮
SunspotsandMagneticFields黑子和磁场MagneticNorthPoles磁北极MagneticSouth Poles磁场图紫外照片磁南极Magneticfieldin sunspotsis about10ootimes stronger thanaverage太阳黑子的磁场比平均磁场强1000倍。Insunspots,magneticfieldlinesemergeoutofthephotosphere太阳黑子中，磁力线从光球层发出
Sunspots and Magnetic Fields 黑子和磁场 Magnetic field in sunspots is about 1000 times stronger than average. 太阳黑子的磁场比平均磁场强1000倍。 In sunspots, magnetic field lines emerge out of the photosphere. 太阳黑子中，磁力线从光球层发出 Magnetic North Poles 磁北极 Magnetic South Poles 磁南极 紫外照片 磁场图