Nebulae Wiki - What is the nebulae?
A nebula (Latin for "cloud" or "fog"; pl. nebulae, nebulæ, or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases. Originally, the term was used to describe any diffuse astronomical object, including galaxies beyond the Milky Way. The Andromeda Galaxy, for instance, was once referred to as the Andromeda Nebula (and spiral galaxies in general as "spiral nebulae") before the true nature of galaxies was confirmed in the early 20th century by Vesto Slipher, Edwin Hubble and others. Most nebulae are of vast size; some are hundreds of light years in diameter. A nebula that is barely visible to the human eye from Earth would appear larger, but no brighter, from close by. The Orion Nebula, the brightest nebula in the sky and occupying an area twice the diameter of the full Moon, can be viewed with the naked eye but was missed by early astronomers. Although denser than the space surrounding them, most nebulae are far less dense than any vacuum created on Earth – a nebular cloud the size of the Earth would have a total mass of only a few kilograms. Many nebulae are visible due to fluorescence caused by embedded hot stars, while others are so diffuse they can only be detected with long exposures and special filters. Some nebulae are variably illuminated by T Tauri variable stars. Nebulae are often star-forming regions, such as in the "Pillars of Creation" in the Eagle Nebula. In these regions the formations of gas, dust, and other materials "clump" together to form denser regions, which attract further matter, and eventually will become dense enough to form stars. The remaining material is then believed to form planets and other planetary system objects. .
What does the word nebulae mean? Find synonyms, antonyms and the meaning of the word nebulae in our free online dictionary! Find words starting with nebulae and anagrams of nebulae.
Definitions of "nebulae"
- Plural form of nebula. noun
The word "nebulae" in example sentences
Yes, some stars do just that, becoming clouds of ionized hydrogen we term nebulae.. [Time for Yesterday]
Working from the Mt. Wilson observatory that looms in the distance over Los Angeles, they discovered that the blurry patches of light called nebulae were not mere gas clouds within the Milky Way, as long supposed, but galaxies in their own right.. [Gabriel Rotello: Saving Mount Wilson]
Fifty years ago it was thought that in the heavenly bodies called nebulae the material of which the world was made had been discovered.. [Evolution An Investigation and a Critique]
They have found within the limits of our astral system, and generally in its outer fields, a great number of objects which, from their foggy appearance, are called nebulae; some of vast extent and irregular figure, as that in the sword of Orion, which is visible to the naked eye; others of shape more defined; others, again, in which small bright nuclei appear here and there over the surface.. [Vestiges of the Natural History of Creation]
They believed the "nebulae" they were viewing were star clusters and gas clouds within the Milky Way. 85 years ago Edwin Hubble postulated, and proved, that these nebulae were distant galaxies and our Milky Way was one of an incalculable number of galaxies comprising the universe.. [The Expanding Universe]
[[Cepheid variables]] located within them as standard candles to determine their distance, showing the "nebulae" were too distant to be part of the Milky Way and hence other galaxies.. [Conservapedia - Recent changes [en]]
The concept of this book - and of the series - is to present an up-to-date detailed description and categorisation of nebulae, and then to instruct the reader in the best ways to successfully observe and record the large range of astronomical objects that fall under the general heading of "nebulae".. [AvaxHome RSS:]
The map or playing field of the space battle often involves "terrain" such as nebulae and asteroids, and sometimes capturable facilities that let you build orbital defenses and such or sensor pods, which reveal the entire field to you.. [Epinions Recent Content for Home]
Cepheid variables located within them as standard candles to determine their distance, showing the "nebulae" were too distant to be part of the Milky Way and hence other galaxies.. [Conservapedia - Recent changes [en]]
The sublime discoveries of modern astronomers have shown that every part of the realms of space abounds in large expansions of attenuated matter termed nebulae, which are irregularly reflective of light, of various figures, and in different states of condensation, from that of a diffused, luminous mass to suns and planets like our own. ". [Zanoni]
cloud-like structures he dubbed "nebulae" pointed to a universe far greater than imagined.. [Telegraph.co.uk - Telegraph online, Daily Telegraph and Sunday Telegraph]
The Winkler Prins encyclopedia of astronomy writes, “The Pleiades is a star cluster … and consists of over 3,000 stars, which are situated in the middle of reflection nebulae.”. [Modern Science in the Bible]
Although NASA's Hubble has offered a generation's worth of spectacular images - sparkling galaxies, billowing nebulae, stunning star clusters - its latest quarry lacks charisma.. [Hubble spots presumed oldest galaxy: Hot, faint, and 13 billion years old]
Within these nebulae, the dense areas continued to grow ever denser under gravity, spin and heat.. [Original Star | SciFi, Fantasy & Horror Collectibles]
Gas particles were pulled together under gravity to form clouds, called nebulae.. [Original Star | SciFi, Fantasy & Horror Collectibles]
The alien host, the spongy nebulae, the zip and twang of the photon torpedo, the bluster of the starship captain at his bridge — these, according to Hubbard, were not the idle tropes of pulp-fictioneers and drugged-up sci-fi hacks but the stuff of deepest prehistory, somber emanations from the memory of the species.. [Lost In Space]
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