The drawing of the nebula of Orion was published in the Phil.
Antoniadi discovered that a nebula surrounded it.
0 Orionis is a multiple star, situated in the famous nebula of Orion, one of the most beautiful in the heavens.
In fact a little consideration of the theory of probabilities will show it to be infinitely probable that such an object should really have some movement of rotation, no matter by what causes the nebula may have originated.
The condensation of a nebula could be followed in the same manner as we can study the growth of the trees in the forest, by comparing the trees of various ages which the forest contains at the same time.
An equivalent statement of the same conclusion may be put thus: supposing a gaseous nebula is destined to condense into a sun, the elementary matter of which it is composed will develop in the process into our known terrestrial and solar elements, parting with energy as it does so.
Earlier still the sun must have reached to where Neptune now revolves on the confines of our system, but the mass of the sun could not undergo an expansion so prodigious without being made vastly more rarefied than at present, and hence we are led by this mode of reasoning to the conception of the primaeval nebula from which our system has originated.
Again by Sir William Huggins, the spectrum of the Orion nebula was photographed on the 7th of March 1882; and the method has gradually become nearly exclusive in the study of nebular emanations.
The rotation of the planets on their axes is also explained as a consequence of the nebular theory, for at the time of the first formation of the planet it must have participated in the rotation of the whole nebula, and by the subsequent contraction of the planet the speed with which the rotation was performed must have been accelerated.
It now seems probable that the spiral nebula is the fittest illustration of the transformation of a diffused nebula into a system of sun and planets.
The nebula M.
There is no difficulty in conceiving how a nebula, quite independently of any internal motion of its parts, shall also have had as a whole a movement of rotation.
The conclusions which researches relating to it have so far reached are treated in the articles STAR; SUN; COMET; NEBULA; AURORA POLARIS, &C. (S.
Each discovery in turn was, according to the prevailing custom, announced to the learned world under the veil of an anagram - removed, in the case of the first, by the publication, early in 1656, of the little tract De Saturni luna observatio nova; but retained, as regards the second, until 1659, when in the Systema Saturnium the varying appearances of the so-called "triple planet" were clearly explained as the phases of a ring inclined at an angle of 28° to the ecliptic. Huygens was also in 1656 the first effective observer of the Orion nebula; he delineated the bright region still known by his name, and detected the multiple character of its nuclear star.
Interesting objects in this portion of the heavens are: the famous spiral nebula first described by Lord Rosse; a-Canum Venati-.
A special study was made of the nebula of Orion, and the resulting large drawing gives an extremely good representation of this complicated object.
Laplace supposed the existence of a primeval nebula which extended so far out as to fill all the space at present occupied by the planets.
It is indeed very doubtful whether any changes of a nebula have ever been seen which are of the same character as the changes Herschel's theory would require.
In attempting to pronounce on the evidence with regard to Herschel's theory, we must at once admit that the transmutation of a nebula into a star has never been seen.
It may be urged in reply that the synthetic philosophy could be made consistent by transferring the knowable resistance and persistence of the unknowable noumenon to knowable phenomena on the one hand, and on the other hand by maintaining that all phenomena from the original nebula to the rise of consciousness are only ` 0 impressions produced on consciousness through any of the senses," after all.
He supposes that evolution is primarily integration, from the incoherent to the coherent, exemplified in the solar nebula evolving into the solar system; secondly differentiation, from the more homogeneous to the more heterogeneous, exemplified by the solar system evolving into different bodies; thirdly determination, from the indefinite to the definite, exemplified by the solar system with different bodies evolving into an order.
Subsequent photographs showed that this nebula, which consisted mainly of two incomplete rings of nebulosity, was expanding outwards at the rate of from 2" to 3" per day.
Starting from a widely diffused nebula, more or less uniform, we find that, in consequence of gravitational instability, it will tend to condense about a number of nuclei.
We have thus grounds for believing that the original nebula will separate into a series of rings all revolving in the same direction with a central nebulous mass in the interior.
per second, and rendering luminous as it reached them the particles of a pre-existing nebula, whose own light had been too faint to be visible.
per second in the gases of the atmosphere of the nova; but the velocity implied by this expansion of the nebula was unprecedented and comparable only with the velocity of light.
In this connexion it may be noted that the spectrum of Nova Persei, after passing through a stage in which it resembled that of a planetary nebula, has now become of the Wolf-Rayet type.
7 7 Argus is surrounded by a nebula, the famous Keyhole nebula "; in this respect it resembles Nova Persei.
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.
97 Ursae majoris is of the planetary type; the earl of Rosse observed two spiral condensations turning in opposite directions, - hence its name, - the " Owl nebula."
Of multiple stars the most famous is 0 Orionis, situated near the densest part of the great Orion nebula.
When examined with a telescope of power insufficient to separate the individual stars, a cluster appears like a nebula.
the " trapezium " of stars in the Orion nebula.
The crab nebula is the remnant of a supernova that was observed by Chinese astronomers in 1054.
posted by dormouse (31st May 2004, 20:17) As a Hugo *and* Nebula winner, I expected this to be good.
Earth condenses from the hot gases of the Solar Nebula... January to early March: Hadean eon.
The Pencil Nebula is almost exactly on the galactic equator.
A H I nebula is made of neutral atomic hydrogen.
kinematics of the planetary nebula Hubble 12: What happens to stars at the end of their lives depends on their mass.
located 8,000 light-years from Earth, the nebula can be seen in the southern sky with the naked eye.
nebula discovered by M. Mechain.
The expended gas frequently forms an impressive display called a planetary nebula that fades gradually over thousand of years.
Description: Here we see the nebula also in the infra-red.
Our own Sun may eject a similar planetary nebula some 6 billion years from now.
Polychrome The trifid nebula from CFHT -- very pretty.
Is a solar nebula the reason or is gravity the reason?
We get some evidence to support the nebula theories from looking a to support the nebula theories from looking a to support the nebula theories from looking at other star systems.
The standard nebula filter takes out a larger chunk of emission from orange out to the start of the nebula filter takes out a larger chunk of emission from orange out to the start of the nebula emission lines.
Features of Aquarius: Aquarius contains the famous planetary nebula Saturn Nebula.
NGC 1999 is an example of a reflection nebula.
The dark clouds block the light from the emission nebula behind.
The solar system formed from a large gas nebula that had some dust grains in it.
The crab nebula is the brightest supernova remnant in the sky.
nurserydition to housing a bright open cluster of stars known as the Trapezium, the Orion Nebula contains many stellar nurseries.
Instead, they absorb ultraviolet photons from hot stars which are near or embedded in the nebula.
planetary nebula some 6 billion years from now.
This process often produces a planetary nebula, with the white dwarf star at its center.
It continues to lose mass via a stellar wind as it dies, forming a planetary nebula.
In other planetary nebulae, like the Ring Nebula (NGC 6720 ), we view the donut from the top.
VLA observations of V4334 Sgr (Sakurai's Object) provided images of the associated faint planetary nebula.
They are relatively pristine remnants of the nebula from which the entire solar system was formed.
radiated away is keeping the nebula glowing.
The Crab Nebula is an example of a supernova remnant.
This version is, if anything, even more spacey, dubbed out and spooked; an Eagle ride through a nebula on Mogadon.
trifid nebula from CFHT -- very pretty.
Finally, the star ceases nuclear burning and becomes a white dwarf, while the expanding nebula mergers with the interstellar medium.
Each discovery in turn was, according to the prevailing custom, announced to the learned world under the veil of an anagram - removed, in the case of the first, by the publication, early in 1656, of the little tract De Saturni luna observatio nova; but retained, as regards the second, until 1659, when in the Systema Saturnium the varying appearances of the so-called "triple planet" were clearly explained as the phases of a ring inclined at an angle of 28Ã‚° to the ecliptic. Huygens was also in 1656 the first effective observer of the Orion nebula; he delineated the bright region still known by his name, and detected the multiple character of its nuclear star.
From 1848 to 1878 it was but with few interruptions employed for observations of nebulae (see Nebula); and many previously unknown features in these objects were revealed by it, especially the similarity of "annular" and "planetary" nebulae, and the remarkable "spiral" configuration prevailing in many of the brighter nebulae.
Some of the energy radiated away is keeping the nebula glowing.
Pet Nebula: You can choose from a huge selection of pets as well as participate in chat rooms, trades and auctions, battle pet vs. pet and even upgrade your account.
You can adopt free dragon cyber pets from Pet Nebula by just signing up.
Insert that into any of the following styles: Scream, Jinx, Shark, Boost, Nebula, Nova, Showtime, Boost OTG, Cylon, or X9.
Published in 1985, an expanded version of a novella of the same name published in Analog magazine in 1977, Ender's Game won both the Hugo and the Nebula awards for best novel.
Featuring a loner (and arguable a loser), the quintessential tough-guy down on his luck, the online playing field, the mysterious female sidekick, Neuromancer won both the Hugo and the Nebula awards.
Ursula Le Guin's now-classic 1969 novel The Left Hand of Darkness won both the Hugo and the Nebula awards.
An unusual entry into our gender-bender category - a novel by Golden Age icon Isaac Asimov, known for years for the chasteness of his prose, The Gods Themselves was published in 1972 and won both the Hugo and the Nebula awards.
Aside from airing episode synopses (and sometimes entire episodes) the channel also features news of the science fiction world on the "Sci Fi Wire" and has won many awards (including the Hugo and Nebula) for fiction published online.
Kara Thrace's viper is destroyed in a nebula.
He is the only Canadian writer to win science fiction's three top honors - the 2003 Hugo Award for Hominids, the 1996 Nebula Award for The Terminal Experiment, and the 2006 John W.
Stories from this magazine routinely collect Hugo or Nebula awards.
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