Sentences with phrase «gas aglow»
In turn, these bright, young stars, most of them Type O, are blasting the HII regions with ultraviolet light, setting the hydrogen gas aglow.
http://earthsky.org/ Not exact matches
The Little Ghost (right) is a more classic planetary nebula: Its doughnut is the steadily expanding ring of star gas that has been ionized and set aglow by ultraviolet light from the central white dwarf.
Clouds of glowing, blue gas, called helium - 2 nebulas, have been set aglow by something hot enough to strip two electrons from each helium atom.