壳层

A starfield surrounds a bright nebula. The nebula is somewhat rectangular like a pillow and is mostly white with brown filaments inside and blue shells surrounding. Please see the explanation for more detailed information.
繁星点点的星空环绕着一片明亮的星云。这片星云形状略呈矩形，宛如一个柔软的枕头。它的主体呈现出洁白的色彩，内部交织着褐色的丝状结构，外围则包裹着一层层蓝色的壳层。有关更多详细信息，请参阅说明。