这两个行星状星云（取这个名字是因为最初在18世纪时说这些物体外观类似行星）名为NGC6303，也叫蝴蝶星云，和NGC7027。
They 're two planetary nebulae ( so named because initially , these objects were first described as planet-like in the 18th century ) called NGC 6303 , or the Butterfly Nebula , and NGC 7027 .
蝴蝶星云