在美国宇航局拍摄的这张诡异的照片中，太阳闪烁着南瓜灯般的笑容

A haunting face reminiscent of a carved jack-o'-lantern emerges from the active regions of the sun's corona in this image captured by NASA's Solar Dynamics Observatory or SDO.

美国国家航空航天局(NASA)太阳动力学观测站(SDO)捕捉到的这张图像中，一张令人难忘的面孔浮现在日冕的活跃区域，让人想起了雕刻的南瓜灯。

The sun celebrates Halloween in its own, mischievous way. (Photo: NASA/GSFC/SDO)

The SDO was launched into orbit in February 2010 and has been staring down our star ever since. This particular photo was taken in October 2014.

SDO是在2010年2月发射进入轨道的，从那时起就一直盯着我们的恒星。这张照片拍摄于2014年10月。

According to NASA, "the active regions appear brighter because those are areas that emit more light and energy — markers of an intense and complex set of magnetic fields hovering in the sun’s atmosphere, the corona."

根据美国国家航空航天局的说法，“活跃区域看起来更亮，因为这些区域发出更多的光和能量——在太阳大气中盘旋的一组强烈而复杂的磁场——日冕的标志。”

To understand and track how particles and heat move through the corona, scientists observe the sun in different wavelengths using a measurement known as angstroms. The image above is a blend of shots taken at two different wavelengths — 171 and 193 angstroms.

为了了解和跟踪粒子和热量是如何穿过日冕的，科学家们使用一种称为埃的测量方法来观察太阳的不同波长。上图是两种不同波长——171埃和193埃——拍摄的照片的合成图。

You can earn more about why and how solar scientists use these varying wavelengths in NASA's Sun Primer.

你可以了解更多关于为什么和如何太阳能科学家使用这些不同波长的美国宇航局的太阳引物。