红矩星云

A dark field surrounds a red nebula. The shape of the nebula appears like the letter “X” but some gas fills the extended prongs, making the interior of the nebula appear as a rectangle. Please see the explanation for more detailed information.
一片暗色区域环绕着一团红色星云。星云的形状看起来像字母“X”，但延伸出的叉状部分被气体填充，使得星云内部呈现矩形。有关更多详细信息，请参阅说明。