Wiktionary
solar nebula
n. (context astronomy English) A disc-shaped cloud of gas and dust left over from the formation of the Sun.
Usage examples of "solar nebula".
There had been a matrix already, around which the pre-biotic compounds of the pre-solar nebula gathered during those early days.
As she did so, she waited for the solar nebula to vanish from the view, leaving nothing but a scattering of stars across the blackness.