Galaxy
Related Category: Astronomy: General
large aggregation of stars, gas, and dust, typically containing billions of stars.
Galaxy groups and clusters
Galaxy groups and clusters are the largest gravitationally-bound objects. They form the densest part of the large scale structure of the Universe.
Galaxy Strangulation
The morphology density relation - an observationally determined relationship between galaxy types and the environments in which they are located - suggests that star formation is suppressed when galaxies enter high density ...
Galaxy
From LoveToKnow 1911
GALAXY, properly the Milky Way, from the Greek name b 'yaXa ias, sc. KbeXos, fromyitXa, milk, cf. theLat. via lactea (see Star).
Galaxy Formation and Mergers
Resources
Beyond the Solar System: Galaxies: Galaxy Formation One of the greatest challenges facing...
Galaxy
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History
For additional meanings of "Galaxy", please see Galaxy (disambiguation).
galaxy
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Galaxy
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Galaxy magnifiers measure age and size of Universe
DR EMILY BALDWIN
ASTRONOMY NOW
Posted: 3 March 2010 ...
Galaxy is also a type of chocolate candy bar made by the Mars company.
See also: Galaxy science fiction, C-5 Galaxy ...
Galaxy Evolution
You've seen that there is quite a wide variety of galaxy types and that the content, sizes, shapes and masses of galaxies are very diverse. Is there any link between the various types?
Galaxy Clusters and How they Live their Lives
One of the most basic areas of investigation in today is in . Theorists and observationalists are working together to try and answer questions like, "How did the evolve after the ?" and "How did form?
galaxy
space definitions
Definition: galaxy: A system of about 100 billion stars. Our Sun is a member of the Milky Way Galaxy. There are billions of galaxies in the observable universe.
Galaxy Spider Diagram
A diagram that gives the equations for lines of constant radial velocities as seen for a rotating galaxy inclined to the observer's line of sight.
References ...
Galaxy :
A galaxy is any of the billions of systems of stars and interstellar matter that make up the Cosmos.
Galaxy is the literary magazine at Brighton High School, a HS in Brighton, a suburb of Rochester, NY, USA.
Galaxy
Wikipedia, the free encyclopedia - Cite This Source
A galaxy (from the Greek root γαÎ"αξίας, meaning "milky", a reference to our own Milky Way) is a massive, gravitationally bound system consisting of stars, ...
Galaxy content: the fraction of E/S0 galaxies depends on local galaxy density (Dressler 1980 ApJ 236, 351) and thus changes markedly from the outskirts to a cluster core (see the environmental-impact lecture.
active galaxy
The different features of an active galactic nucleus (AGN), and how our viewing angle determines what type of AGN we observe. The extreme luminosity of an AGN is powered by a supermassive black hole at the center.
Galaxy
Using infrared images from NASA's Spitzer Space Telescope, scientists have discovered that the Milky Way's spiral has just two arms wrapping off the ends of a central bar of stars. Scientists had thought that the Milky Way had four major arms.
A galaxy with a combination of characteristics never seen before is giving astronomers a tantalizing peek at processes they believe played key roles in the growth of galaxies and clusters of galaxies early in the history of the Universe.
A galaxy like the Milky Way as viewed from the top, and the actual Milky Way as viewed in the infrared
Click on top image for diagram (276K JPEG)
Click on bottom image for diagram (204K JPEG)
European Southern Observatory & NASA COBE Project ...
Our Galaxy is one of a small cluster of galaxies, which are collectively called the Local Group. The Local Group contains numerous dwarf galaxies and a few larger galaxies.
The galaxy is inclined an estimated 77° relative to the Earth (where an angle of 90° would be viewed directly from the side).
VLT finds galaxy cluster at the edge of the observable Universe
The sky region of the galaxies at a distance of about 13.5 billion light-years from the Earth.
The Milky way Galaxy is just one galaxy in a group of galaxies called the . Within the Local Group, the Milky Way Galaxy is moving about 300 km/sec (towards the Virgo).
The Andromeda Galaxy...
Jewel Of The Andromeda Constellation
The Andromeda constellation contains the Andromeda galaxy, the most distant object visible with the naked eye.
The Andromeda Galaxy
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Go to Imagine the Universe! (A site for ages 14 and up.) ...
The Milky Way is a galaxy that contains at least 200 billion stars. It is an average-size galaxy of the barred spiral class. This means that there is a central bulge, with arms, which extend for many light-years*.
The Antlia Dwarf Galaxy
On the original sky survey plate Antlia looks like a fuzzy low surface brightness patch some 3mm (= 3 arcmin) in diameter.
So is this black hole what holds our galaxy together? Probably not. If it did, then the motion of stars around it would slow down with increasing distance, in accordance with Kepler's third law.
At the time of the observations, SOHO is looking towards the heart of the Milky Way Galaxy, which lies in the constellation of Sagittarius.
Galaxy
(a) Vast system of celestial objects, typically consisting of between 106 and 1012 stars, plus interstellar gas and dust.
GALAXY
GALAXY, a massive ensemble of hundreds of millions of stars, all gravitationally interacting, and orbiting about a common center. All the stars visible to the unaided eye from earth belong to the earth's galaxy, the Milky Way.
Galaxy Clusters
Most galaxies are found in groups or clusters which contain a few to thousands of galaxies bound together by their mutual gravity.
GALAXY CLUSTER - Group of galaxies which are mutually gravitationally bound. There are two important types of galaxy clusters: Regular and Irregular Galaxy Clusters.
Galaxy Collisions and Mergers
Modern research into galaxy formation is also exploring the role that mergers and collisions of galaxies plays in the structure of galaxies.
Galaxy Formation Simulation
Theoretical evidence for this scenario is provided by computer simulations of the early universe, which clearly show merging taking place.
Galaxy: A large assemblage of stars (and sometimes interstellar gas and dust), typically containing millions to hundreds of billions of member stars.
Galaxy Cluster Abell 2065 constitutes Corona Borealis' most famous, though extremely difficult, deep sky target.
List of Constellations
Spring Sky ...
galaxy
an enormous gravitationally bound assemblage of millions or billions of stars
galaxy cluster ...
Galaxy A large disk or ball of billions of stars and nebulae. They are the largest individual structures in the Universe.
Galaxy: What is the shape of the galaxy? Does it have a bright nucleus? Is the galaxy uniform in brightness? It is diffuse or stellar? Can any details or mottling be seen? Can it be seen with direct vision or is averted vision required?
Galaxy: A large body of gas, dust, stars, and their companions held together by their mutual gravitational attraction.
galaxy
A component of our universe made up of gas and a large number (usually more than a million) of stars held together by gravity.
Galaxy -- One of billions of systems, each composed of numerous stars, nebulae, and dust.
galaxy cluster
A group of galaxies held in proximity due to their mutual gravitational attraction. A galaxy cluster may contain several galaxies up to thousands of galaxies.
Galaxy
a large system of about 100 billion stars. Our Sun is a member of the Milky Way Galaxy. There are billions of galaxies in the observable universe.
Galaxy, The. The star system of which the Sun is a member. The Galaxy is also known as the Milky Way galaxy. It is spiral in shape, contains about 100 000 million stars and is approximately 100 000 light years across.
galaxy: A very large collection of gas, dust, and stars orbiting a common center of mass. The sun and Earth are located in the Milky Way Galaxy.
Galaxy - A massive system of stars, gas, and dark matter held together by its own gravity
Gamma Ray - The part of the electromagnetic spectrum having the shortest wavelengths ...
Galaxy groups and clusters are the largest gravitationally-bound objects to have arisen thus far in the process of cosmic structure formation....
and, finally, the largest-scale structures such as the Great Wall of galaxies
Great Wall (astronomy) ...
Galaxy Spectra
The overall spectrum of a galaxy is simply the combined spectrum of all the stars and other radiating matter in the galaxy. As galaxies vary in structure and relative composition of star type and gas their spectra will vary.
N Galaxy
A galaxy with a small, bright, blue nucleus superposed on a considerably fainter red background.
The Galaxy Song written by Eric Idle (and sung by Eric Idle in the Monty Python film "The Meaning of Life").
Poor Galaxy Cluster
An irregularly shaped cluster that contains fewer than 1000 galaxies, many spiral, and no giant ellipticals.
Population I ...
ACTIVE GALAXY
An active galaxy is a galaxy that produces huge amounts of energy; they produce more energy than the total energy emitted from all of the stars in the nebula.
galaxy - (n.)
spelled with a lower-case g, galaxy means any of millions of stellar systems once called "island universes" or extragalactic nebulae. Depending on their form, galaxies may be called spirals, barred spirals, ellipticals, or irregulars.
galaxy: a vast collection of stars, gas, and dust, typically 10,000 to 100,000 light-years in diameter and containing billions of stars.
light pollution: a glow in the night sky or around an observing site caused by artificial light.
Galaxy
A Galaxy is a collection of millions of stars and debris in space.
Galileo ...
 See also: Light, Star, Galaxies, Earth, Sun
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