Lexic.us

Definition of Planetary nebula

1. Noun. A nebula that was once thought to be a star with its planets but is now thought to be a very hot star surrounded by an expanding envelope of ionized gases that emit a fluorescent glow because of intense radiation from the star.

Definition of Planetary nebula

1. Noun. (astronomy) A nebulosity surrounding a dying star, consisting of material expelled by the star. ¹

¹ Source: wiktionary.com

Lexicographical Neighbors of Planetary Nebula

Literary usage of Planetary nebula

Below you will find example usage of this term as found in modern and/or classical literature:

1. Proceedings of the Royal Irish Academy by Royal Irish Academy (1883)
"planetary nebula, 37, H. IV. MADE WITH THE SOUTH EQUATORIAL AT ... Mr. Gill read a Paper on the •' Parallax of the planetary nebula H. IV., 37," for which ..."

2. The Popular Science Monthly (1873)
"planetary nebula. a sharp edge. Figs. 16 and 17 exhibit the most striking of these very remarkable stellar nebulae: the first is surrounded by a system of ..."

3. Publications of the Astronomical Society of the Pacific by Astronomical Society of the Pacific (1893)
"THE planetary nebula SD. - 12°, 1172. BY WW CAMPBELL. This nebula was discovered by Mrs. FLEMING on the Harvard College Observatory plates by means of its ..."

4. Proceedings of the American Association for the Advancement of Science (1881)
"A planetary nebula, on the other hand, being nearly monochromatic, appears as a point of light, and is distinguished at a glance from a star. ..."

5. A Treatise on Astronomy by Elias Loomis (1870)
"planetary nebula? exhibit discs of uniform brightness throughout, often very sharply defined at the ... About twenty planetary nebula; have been observed. ..."

6. Proceedings of the Royal Irish Academy by Royal Irish Academy (1883)
"planetary nebula, 37, H. IV. MADE WITH THE SOUTH EQUATORIAL AT ... Mr. Gill read a Paper on the •' Parallax of the planetary nebula H. IV., 37," for which ..."

7. The Popular Science Monthly (1873)
"planetary nebula. a sharp edge. Figs. 16 and 17 exhibit the most striking of these very remarkable stellar nebulae: the first is surrounded by a system of ..."

8. Publications of the Astronomical Society of the Pacific by Astronomical Society of the Pacific (1893)
"THE planetary nebula SD. - 12°, 1172. BY WW CAMPBELL. This nebula was discovered by Mrs. FLEMING on the Harvard College Observatory plates by means of its ..."

9. Proceedings of the American Association for the Advancement of Science (1881)
"A planetary nebula, on the other hand, being nearly monochromatic, appears as a point of light, and is distinguished at a glance from a star. ..."

10. A Treatise on Astronomy by Elias Loomis (1870)
"planetary nebula? exhibit discs of uniform brightness throughout, often very sharply defined at the ... About twenty planetary nebula; have been observed. ..."

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