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Galaxy - Wikipedia


A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and ..... At the other extreme, an Sc galaxy has open, well-defined arms and a small core region. A gal...

Galaxy | Define Galaxy at Dictionary.com


Galaxy definition, a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. See more.

What is a Galaxy? | NASA Blueshift


Sep 17, 2012 ...Galaxy,” Defined — when I came across a paper with this title while browsing a recent issue of Astronomical Journal, I was intrigued.

galaxy - Dictionary Definition : Vocabulary.com


A galaxy is a collection of stars and planets that are held together by gravity. In a galaxy, the celestial bodies rotate around a central object.

What Is a Galaxy? | Science | AAAS


Jan 27, 2011 ... A pair of astronomers call for a debate on a tricky definition. ... You might think a galaxy is simply a large group of stars, but just how many stars ...

galaxy - definition of galaxy in English | Oxford Dictionaries


a system of millions or billions of stars, together with ... Meaning, pronunciation, example sentences, and more from Oxford Dictionaries.

What defines a galaxy? - Scientific American


Today we are nearly overwhelmed with data on the immense diversity of galaxies , to the extent that it actually becomes difficult to write down a definition that ...

What Defines a Galaxy? | astrobites


Mar 16, 2012 ... A more common recent definition appeals to the presence of dark matter: a galaxy contains it, while a star cluster such as a GC does not.

What is a Galaxy? - Universe Today


Apr 26, 2016 ... ... heard that our Sun is located in the Milky Way galaxy. But what is a galaxy anyway? The simple answer is that a galaxy is a collection of s.

Galaxy dictionary definition | galaxy defined - YourDictionary


The definition of a galaxy is a large area, particularly of dust, stars and gas that makes up a universe. An example of a galaxy is the Milky Way. YourDictionary ...

any large and brilliant or impressive assemblage of persons or things: a galaxy of opera stars.
Source: Dictionary.com
galaxy | Define galaxy at Dictionary.com
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