In 1864, William Huggins noted that the spectrum of Andromeda differs from a gaseous nebula.
2.
He discovered new gaseous nebulas and the anomalous abundance of 13 C in stellar atmospheres.
3.
With such a definition, if 2M1207b formed by direct gravitational collapse of a gaseous nebula, it would be a sub-brown dwarf rather than a planet.
4.
The Pistol Star ( so called because of the shape of a gaseous nebula surrounding it ) burns with the brightness of 10 million Suns and is so large that it would fill the entire space inside Earth's orbit.
5.
With that data and the inspiration from a chapter on gaseous nebula and the emission of radiation at low density in the book " Astronomy " by Henry Norris Russell, Raymond Smith Dugan and John Quincy Stewart he achieved his best known discovery.
परिभाषा
a cluster of stars within an intricate cloud of gas and dust पर्याय: diffuse nebula,
मोबाइल