Where results make sense

About us   |   Why use us?   |   Reviews   |   PR   |   Contact us

Topic: Large-scale structure of the cosmos

    Note: these results are not from the primary (high quality) database.

Ads by Google

Related Topics

Groups and clusters of galaxies

Galaxy formation and evolution

Great Attractor

Local Supercluster

Dark matter

Timeline of galaxies, clusters of galaxies, and large scale structure

Extragalactic astronomy

List of galaxy clusters

M31

Hubble Flow

Virgo Supercluster

Local Group

Dark energy

Big Bang

Galaxy - Wikipedia, the free encyclopedia Timeline of galaxies, clusters of galaxies, and large scale structure Structures containing up to about 50 galaxies are called groups of galaxies, and larger structures containing many thousands of galaxies packed into an area a few megaparsecs across are called clusters. When astronomers speculated that certain objects previously classified as spiral nebulae were actually vast congeries of stars, this was called the "island universe theory"; but this was an obvious misnomer, since universe means everything there is. Consequently, this term fell into disuse, replaced by applying the term galaxy generically to all such bodies. www.bexley.us /project/wikipedia/index.php/Galaxy   (1392 words)

Doctor Scales -- Recommendations and Resources N scale uses 9 mm gauge track, and a scale of 1:160 worldwide, except for the United Kingdom where a scale of is 1:148 is used because of the problems early on in fitting mechanisms into smaller British trains. Unlike other scales and gauges, which were de facto standards at best, within two years N scale defined the gauge, voltage, and polarity of track, as well as the height and type of couplers. Originally and correctly, G ''scale'' is the use of 45mm gauge track, as used in standard gauge I scale (NEM 010), aka 3/8" scale (NMRA S-1), for modelling metre gauge narrow gauge railways, using the correct scale of 1:22.5. www.becomingapediatrician.com /health/43/doctor-scales.html   (1103 words)

Large-scale structure of the cosmos - Wikipedia, the free encyclopedia Astronomy and cosmology examine the universe to understand the large-scale structure of the cosmos. Another indicator of large-scale structure is the 'Lyman alpha forest'. The existence of this structure escaped notice for so long because it requires locating the position of galaxies in three dimensions, which involves combining location information about the galaxies with distance information from redshifts. en.wikipedia.org /wiki/Large-scale_structure_of_the_cosmos   (891 words)

Universe - Wikipedia, the free encyclopedia whether the rules of Euclidean geometry are valid on the largest scales, is unknown. Attempts to understand the universe in this sense, on the largest possible scales, are made in cosmology, a science that has grown from physics and astronomy. In the first half of the 20th century, the word universe was used to mean the whole spacetime continuum in which we exist, together with all the energy and matter within it. www.bexley.us /project/wikipedia/index.php/Universe   (1282 words)

Category:Large-scale structure of the cosmos - Wikipedia, the free encyclopedia Articles in category "Large-scale structure of the cosmos" Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure This page was last modified 17:32, 25 July 2005. en.wikipedia.org /wiki/Category:Large-scale_structure_of_the_cosmos   (65 words)

The world's top Cosmology websites Large Scale Structure of the Cosmos - few 100 Mpc - a few percent of the horizon Cosmology is the study of the large-scale structure and history of the universe. Basic and advanced tutorials on the age and structure of the universe, the Big Bang, and the relation of string theory to cosmology. dirs.org /dir-wiki.cfm/Top/Science/Physics/Cosmology   (1176 words)

Science News: Galaxy map reveals the limits of cosmic structure The two approaches both indicate that gravity alone created the large-scale structure of the cosmos. The largest structures that gravity could have built since the birth of the universe some 13 billion years ago are indeed the largest collections of galaxies depicted by the survey. Instead of being disappointed, cosmologists say they're thrilled to find evidence that structure in the cosmos maxes out. www.findarticles.com /p/articles/mi_m1200/is_7_158/ai_65301545   (1213 words)

CONK! Encyclopedia: Category:Nature In scale, 'nature' includes everything from the universal to the subatomic. Nature (also called the material world, the material universe, the natural world, and the natural universe) is all matter and energy, especially in its essential form. www.conk.com /search/encyclopedia.cgi?q=Category:Nature   (97 words)

SHAPE OF THE UNIVERSE FACTS AND INFORMATION Both astronomical measurements of supernova events and cosmological measurements of the structures in the ambient cosmic_background_radiation, are well approximated by a Friedmann-Lemaître-Robertson-Walker model. For a flat local geometry, the scale of any properties of the topology is arbitrary and may or may not be directly detectable. Using the radius of the curvature as a scale, a small curvature of the local geometry, with a corresponding scale greater than the observable horizon, makes the topology difficult to detect. www.igopay.com /shape_of_the_universe   (1301 words)

Kapitel1.qxp-engl In the field of extra-galactic astronomy, the focus is on the question of the large-scale structure of the cosmos, the search for the protogalaxies and research into active galaxies and quasars. In the field of galactic research, the Institute concentrates on the formation of stars in large interstellar clouds made of gas and dust. Fig.I.4: ESO’s Very Large Telescope during contstruction on the Paranal, late 1997. www.mpia-hd.mpg.de /Public/MPIA/JB1997/E/K1/K1-7.html   (411 words)

Great Wall of China - Great Wall of China - Travel to China For the largest known Large-scale structure of the cosmossuper-structure in the universe, see Great Wall (astronomy). The Great Wall that can still be seen today was built during the Ming Dynasty, on a much larger scale and with longer lasting materials (solid stone used for the sides and the top of the Wall) than any wall that had been built before. The primary purpose of the wall was not to keep out people, who could scale the wall, but to insure that semi-nomadic people on the outside of the wall could not cross with their horses or return easily with stolen property. www.famouschinese.com /virtual/Great_Wall_of_China   (1334 words)

Hubble's law When this metric was applied to the Einstein equations, the so-called Friedmann equations emerged which characterized the expansion of the universe based on a parameter known today as the scale factor which can be considered a scale invariant form of the proportionality constant of Hubble's Law. This idea of an expanding spacetime would eventually lead to the Big Bang and to the Steady State theories. However, a few scientists continued to pursue the dynamical universe and discovered that it could be characterized by a metric that came to be known after its discoverers, namely Friedmann, Lemaître, Robertson, and Walker. www.1bx.com /en/Hubbles_law.htm   (1380 words)

Groups and clusters of galaxies - FreeEncyclopedia Timeline of galaxies, clusters of galaxies, and large-scale structure At the very largest scales of the visible universe, matter is gathered into filaments and walls surrounding vast voids. However their velocities are too large for them to remain gravitationally bound by their mutual attractions, implying the presence of an additional invisible mass component. openproxy.ath.cx /ga/Galaxy_cluster.html   (407 words)

Martin White: Current Research Interests Since any model of structure formation must explain both the tiny ripples in the Cosmic Microwave Background temperature across the sky, and the large-scale structures we see in the universe today, the combination of these two probes is especially powerful. A key role in the formation of large-scale structure is played by dark matter, whose gravitational influence dominates that of the other components for most of the history of the universe. By mapping galaxy clusters (the mountains of the cosmos) we gain an insight into the process of structure formation as it is occuring today -- a special epoch when the universal expansion is beginning to accelerate. astron.berkeley.edu /~mwhite/myresearch.html   (2031 words)

Astronomy and cosmology: The evolving Universe - Large-scale structure As dark matter accounts for the major part of the mass in the Universe and is thus largely responsible for controlling the dynamics of cosmic structure, its nature is a significant ingredient in the simulations. Astronomy and cosmology: The evolving Universe- Large-scale structure To explain the structure we see now in the sky, cosmologists model the evolution of the Universe, as it expands, on a supercomputer. www.pparc.ac.uk /Ps/aac/aac_evuniv_lss.asp?Pf=1   (357 words)

Chapter 17 Large Scale Supercluster Structure of the Universe as a focal Plane of Magnitude. Being as small as we are in a Cosmos as large as it is, it is of course impossible to see the whole Cosmos and Universe as a single Composite, because we are in the midst the middle and can’t see the edge of the universe in any direction. We can do this by identifying its fundamental Unit of Pattern, a Structural and Functional Unit of Universe that is truly representative of the fundamental fabric and structure of the Cosmos and Universe as a whole. www.origin-of-universe.com /chapters/chapter_17.htm   (4339 words)

India Tech Support Superclusters are large groupings of smaller galaxy groups and clusters, and are among the largest structures of the cosmos. Even though superclusters are the largest structures confirmed, the total number of superclusters leave possibilities for structural distribution; the total number of superclusters in the universe is believed to be close to 10 million. No clusters of superclusters are known, but the existence of structures larger than superclusters is debated (see Filament). indiantech.com /index.php?title=Supercluster   (216 words)

Marcella Carollo zCOSMOS, a 40'000 redshift survey on the VLT to trace the group environment and the large-scale structure of the COSMOS galaxies. COSMOS is thus built to study the galaxy versus large-scale structure relation at high redshifts, matching similar local efforts such as the SLOAN survey. The size of the COSMOS ACS field is chosen so that the transverse dimension exceeds 50 comoving Mpc at all redshifts z > 0.5, thus comfortably exceeding the largest known structures in the Universe, minimizing cosmic variance and ensuring that the full range of cosmic environments is sampled. www.exp-astro.phys.ethz.ch /carollo   (445 words)

:.Indian Encyclopedia.: Timeline of galaxies, clusters of galaxies, and large-scale structure of the cosmos 1992 - First detection of large-scale structure in the cosmic microwave background indicating the seeds of the first clusters of galaxies in the early Universe 1998 - The 2dF Galaxy Redshift Survey maps the large scale structure in a section of the Universe close to the Milky Way www.indianencyclopedia.com /index.php?title=Timeline_of_galaxies,_clusters_of_galaxies,_and_large_scale_structure   (942 words)

Large Scale Structure Figure 1 is an attempt to encapsulate our present understanding of the large scale structure that embodies the local Universe. But perhaps its most important function is to provide the "big picture" context for analysis and interpretation of data concerning galaxy clusters, large scale structure and the density of matter in the Universe. The study of the local Universe, including its peculiar motions and its clustering on scales exceeding 100 Mpc, is an essential ingredient in the connection between the origin of structure in the early Universe and the subsequent formation of galaxies and their evolution to the state we observe today. spider.ipac.caltech.edu /staff/jarrett/papers/LSS   (4053 words)

Hubble's law - Wikipedia, the free encyclopedia The universe is notoriously inhomogeneous on a human scale, as also on stellar/galactic scales as neighborhoods within my house have physical properties very different from those within the interior of the sun much less neighborhoods within the Swartzchild radius of Our Galaxy's central black hole. On cosmic scales, where galaxies are small, some regions are fairly homogeneous, but over all, the entire universe (as we know it from the background microwave radiation) is also notoriously inhomogeneous. On quantum scales, no regions anywhere are homogeneous. www.peekskill.us /project/wikipedia/index.php/Hubble's_Law   (1038 words)

Shape Fast Notwithstanding that the universe is "weakly" inhomogeneous and anisotropic in the large-scale structure of the cosmos, both astronomical and cosmological measurements determine the observable universe to be, on average, homogeneous, isotropic and an expanding, or accelerating, universe. They are also used to demolish large obsolete structures by precisely placed and progressively timed cutting charges with the intent of causing an inward collapse that confines the debris to the structure's footprint. For instance, in the four-shape tradition used in the Sacred Harp and elsewhere, the notes of a C major scale are notated and sung as follows: A skilled singer experienced in a shape note tradition has developed a fluent triple mental association, which links a note of the scale, a shape, and a syllable. www.blownspeakers.com /pages3/80/shape-fast.html   (1615 words)

* Larissa - (Astronomy): Definition Compared with the satellites of other planets of the solar system, Larissa is a large Moon with a diameter of 208(X 178) km and an unknown mass. en.mimi.hu /astronomy/larissa.html   (260 words)

Harvard-Smithsonian Center for Astrophysics Celebrates 25 Years 1986: CfA astronomers describe the large-scale structure of the cosmos as a "soap-bubble universe," in which galaxies are apparently distributed on the surfaces of thin sheets surrounding vast voids in space. 1990: The largest single coherent structure ever seen in nature -- a "great wall" of galaxies stretching across the sky -- is identified from CfA's three-dimensional map of the Universe. Halley's Comet returns and space observations confirm Fred Whipple's "dirty snowball" concept of cometary structure. www.news.harvard.edu /gazette/1998/10.15/Harvard-Smithso.html   (935 words)

Online Book Cosmology is the scientific study of the large scale properties of the Universe as a whole. Prior to 1989 it was commonly assumed that the superclusters were the largest structures in existence, and that they were distributed more-or-less uniformly throughout the universe in every direction. The most common signatures are non-thermal emission from the rf to X-ray region of the spectrum, and/or jets and unusual structure associated with the visual appearance of the galaxy. www.physics.sfasu.edu /astro/astronomylinks/all6.html   (2681 words)

Starbursts triggered by violent collisions lit up young galaxies in the early universe, according to new study of galaxy evolution Their results suggest that the high-redshift galaxies offer a glimpse of the universe at a stage when the large-scale structure of the cosmos was still forming. In this standard model of the cosmos, galaxies form within large halos of dark matter. Most of the collisions in the simulation occurred in or near relatively massive dark matter halos, resulting in strong clustering of the starbursts in space. www.eurekalert.org /pub_releases/1999-09/UoCS-Stbv-140999.php   (1308 words)

Galaxy Formation and the Development Galaxy Formation and the Development of Large-Scale Structure: Caption A dynamic range of 1000 in length scales was achieved by using a fully Lagrangian gravity and smoothed particle hydrodynamics code. The simulated galaxy exhibits a rotationally supported disk structure, a feature that is characteristic of observed spiral galaxies. archive.ncsa.uiuc.edu /Cyberia/Cosmos/TheWorks1.html   (244 words)

Untitled Topics include stellar evolution; the structure of the Milky Way; properties of galaxies; the large-scale structure and evolution of the Universe. Week 11: Quasars; large scale structure in the cosmos The lab sessions are held in Hennings 312, where we have 18 PCs running a suite of astronomical simulation software, including a planetarium simulator, an ``orrery'' (a computer model of the Solar System), Web-based interfaces to study planetary surfaces, and telescope and instrumentation simulators. www.physics.ubc.ca /~birger/a102co.htm   (184 words)

Infrared Large Scale Structure Large scale structure (LSS) of the local universe as seen through the far-infrared COBE/IRAS foreground dust mask. Large Scale Structure in the Local Universe (Jarrett 2004) The COBE/IRAS image comes from LAMBDA and is derived from the work of Schlegel et al. spider.ipac.caltech.edu /staff/jarrett/2mass/LSS   (603 words)

VLA-COSMOS Project The Cosmic Evolution Survey (COSMOS) is a pan-chromatic (X-ray to mm) observational project to perform the definitive study of galaxy and super-massive black hole evolution in the crucial redshift range of z = 0.5 to 3, with particular attention to the influence of environment and large scale structure. The areal coverage is large enough to avoid cosmic variance, and to delineate structure on the largest relevant scales (~100 Mpc comoving). The VLA Large Project VLA-COSMOS is a state-of-the-art (1.7'' resolution), deep (1sigma ~ 7.5 uJy), wide-field imaging survey at 1.4 GHz of the COSMOS 2 square-degree deep field with the VLA. www.mpia-hd.mpg.de /homes/schinner/cosmos/cosmos.html   (338 words)

Try your search on: Qwika (all wikis)

About us   |   Why use us?   |   Reviews   |   Press   |   Contact us   Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.