What you are seeing is not the famous Horsehead nebula toward Orion but rather a fainter nebula that only takes on a familiar form with deeper imaging.

• 你现在看到的不是位于猎户座方向的著名的马头星云，而是另一个更暗的星云，只能呈现于为大家所熟悉的更长时间曝光的照片上。