A small cluster of indistinct stars, or a star in a luminous haze.
〔天文〕星云状星群，弥漫星云
Example sentencesExamples
The object was included in a list of nebulous stars by Halley.
Look again carefully and just to the lower right of the Trifid is another nebulous star cloud, Sharpless2-26.
Nebulae or nebulous stars were in fact actually a number of small stars clustered together.
Many of these secondary nuclei look exactly like stars but a number of them have a soft appearance which has led Ritchey to call them nebulous stars…
This group of nebulous stars is just half a degree north of the much brighter Orion Nebula and has largely been ignored because of it.
A 30-minute exposure by I. Roberts revealed ‘a very dense circular nucleus surrounded by summetrical nebulosity, which gave the comet the appearance of a nebulous star.’
He described the Milky Way as a collection of countless fragments of the nature of nebulous stars.
It is probable that most of these, and also many nebulous stars, may have been formed by volatilization of bodies passing into heated gas, or by aggregation, in the manner already described.
Definition of nebulous star in US English:
nebulous star
noun
Astronomy
A small cluster of indistinct stars, or a star in a luminous haze.
〔天文〕星云状星群，弥漫星云
Example sentencesExamples
Look again carefully and just to the lower right of the Trifid is another nebulous star cloud, Sharpless2-26.
Nebulae or nebulous stars were in fact actually a number of small stars clustered together.
The object was included in a list of nebulous stars by Halley.
Many of these secondary nuclei look exactly like stars but a number of them have a soft appearance which has led Ritchey to call them nebulous stars…
A 30-minute exposure by I. Roberts revealed ‘a very dense circular nucleus surrounded by summetrical nebulosity, which gave the comet the appearance of a nebulous star.’
It is probable that most of these, and also many nebulous stars, may have been formed by volatilization of bodies passing into heated gas, or by aggregation, in the manner already described.
This group of nebulous stars is just half a degree north of the much brighter Orion Nebula and has largely been ignored because of it.
He described the Milky Way as a collection of countless fragments of the nature of nebulous stars.