Horsehead Nebula

例句：

1. 1.The Horsehead Nebula is a fascinating object in the sky.
   马头星云是天空中一个令人着迷的天体。
2. 2. Astronomy enthusiasts often marvel at the Horsehead Nebula's beauty.
   天文爱好者经常对马头星云的美丽感到惊叹。
3. 3. The Horsehead Nebula is one of the most famous objects in the Milky Way.
   马头星云是银河系中最著名物体之一。