nebulosity

The hot central star can be seen faintly near the center of the nebulosity.

From Textbooks ● Oct. 13, 2016

Later, the stars wander out of their nursery to seek their fortunes in the Milky Way, stellar adolescents still surrounded by tuffs of glowing nebulosity, residues still gravitationally attached of their amniotic gas.

From "Cosmos" by Carl Sagan

Nebulæ may have any of the forms which have been described; and, in 1811, he gives examples of immense spaces in the sky covered with diffused and very faint nebulosity.

From Sir William Herschel: His Life and Works by Edward Singleton Holden

Nebulæ can be selected so that an insensible gradation shall take place from a coarse cluster like the Pleiades down to a milky nebulosity like that in Orion, every intermediate step being represented.

From Sir William Herschel: His Life and Works by Edward Singleton Holden

Photographs show that the brighter stars of the Pleiades are involved in nebulosity.

From Astronomical Curiosities Facts and Fallacies by J. Ellard Gore

October we mean to spend at Paris, before we return to the nebulosities of London.

From Personal Recollections, from Early Life to Old Age, of Mary Somerville by Mary Somerville

They are transparent nebulosities, of extreme lightness, without mass nor density.

From Astronomy for Amateurs by Frances A. (Frances Alice) Welby

No one, who has not been stultified by theological nebulosities, ought to fail to know, as we knew when we first began to go to school, that a blind man cannot see anything at all.

From Punchinello, Volume 1, No. 07, May 14, 1870 by Various

But, as to substance, he contains too many nebulosities and abstractions for my taste; a veritable mist of them, out of which emerges—what?

From Alone by Norman Douglas

Through the battling nebulosities Yolara's face swam forth—horror-filled, distorted, inhuman!

From The Moon Pool by Abraham Merritt