planetary nebula in English

noun
1
a ring-shaped nebula formed by an expanding shell of gas around an aging star.
Astronomers call such an object a planetary nebula , because its round shape resembles that of a planet when viewed with a small telescope.

Use "planetary nebula" in a sentence

Below are sample sentences containing the word "planetary nebula" from the English Dictionary. We can refer to these sentence patterns for sentences in case of finding sample sentences with the word "planetary nebula", or refer to the context using the word "planetary nebula" in the English Dictionary.

1. The result is called, somewhat misleadingly, a planetary nebula.

2. The result is called, somewhat misleadingly,(sentencedict .com) a planetary nebula.

3. A dying star, gasping its last breath into a planetary nebula?

4. Many objections can be raised to this picture of planetary nebula formation.

5. This ejected material formed an immense cloud of material called a planetary nebula.

6. This object was the first planetary nebula to be discovered; by Charles Messier in 1764.

7. The label "planetary nebula" is another astronomical misnomer, as the objects are completely unrelated to planets.

8. Messier object List of Messier objects New General Catalogue List of planetary nebulae "M 76 – Planetary Nebula".

9. Planetary nebula Mz3 is being cast off by a star similar to our Sun that is, surely, round.

10. Then, for a relative blink of about 000 years or less, the star becomes a planetary nebula. Sentencedict.com

11. One last thing to catch up on is, we talked about the beautiful planetary nebula the sun will make.

12. The remnant central stellar core, known as a planetary nebula nucleus or PNN, is destined to become a white dwarf star.

13. The total nebula shines at the apparent magnitude of +10.1 with its central star or planetary nebula nucleus (PNN) at +15.9v (16.1B) magnitude.

14. The Little Dumbbell Nebula, also known as Messier 76, NGC 650/651, the Barbell Nebula, or the Cork Nebula, is a planetary nebula in the constellation Perseus.

15. M22 is very unusual in that it is one of only four globulars (the others being M15, NGC 6441 and Palomar 6) that are known to contain a planetary nebula.

16. ‘Why, given its exceedingly smooth beginnings, is the universe so Clumpy, on all scales from galaxies to galactic superclusters?’ ‘Sure enough, there was a huge shell of Clumpy, hole-riddled gas that looked like a nearly dissipated planetary nebula.’

17. ‘Why, given its exceedingly smooth beginnings, is the universe so Clumpy, on all scales from galaxies to galactic superclusters?’ ‘Sure enough, there was a huge shell of Clumpy, hole-riddled gas that looked like a nearly dissipated planetary nebula.’