Planetary-nebula Sentence Examples
Nebular chemistry was initiated by the same investigator when, on the 29th of August 1864, he observed the bright-line spectrum of a planetary nebula in Draco.
The expended gas frequently forms an impressive display called a planetary nebula that fades gradually over thousand of years.
Our own Sun may eject a similar planetary nebula some 6 billion years from now.
It continues to lose mass via a stellar wind as it dies, forming a planetary nebula.Advertisement