Planetary-nebula sentence example

planetary-nebula
  • 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.
    0
    0
  • The expended gas frequently forms an impressive display called a planetary nebula that fades gradually over thousand of years.
    0
    0
  • Our own Sun may eject a similar planetary nebula some 6 billion years from now.
    0
    0
  • It continues to lose mass via a stellar wind as it dies, forming a planetary nebula.
    0
    0