Such were a few of the theorems to which his discovery of this nebula led him.
Nebulosa means cloudy or dark, from nebula, a cloud; from its color.
The visitor, by its attraction, drew from the nebula a wisp of gas.
The starting-point, the nebula, is no figment of the scientific imagination.
The stars were almost gone, the center of the nebula only a faint wisp.
What, then, is the origin of a nebula, and what the physical explanation of that origin?
Huggins has found that the spectrum of this nebula is not gaseous.
Viewed in a very small telescope, this object resembles a nebula.
The nebula Praesepe in Cancer, he was also able to resolve into a cluster of stars.
Nowhere else in the heavens is the architecture of a nebula so clearly displayed.