nebular

Ultraviolet radiation from the hot star powers the nebular glow.

热恒星的紫外辐射使星云发光。

Within the Iris, dusty nebular material surrounds a hot, young star.

在彩虹星云中，星云尘埃物质围绕着一颗炙热的年轻恒星。

The dramatic false-color image also highlights the contributions of hydrogen, sulfur, and oxygen, energized by intense ultraviolet radiation, to the nebular glow.

这张生动的假色影像还突出了氢，硫和氧元素的作用，在强紫外线辐射下，星云发出炽热的光芒。