A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar
gas, dust, and ... However, the word Universe was later understood to mean the
entirety of existence, so this expr...
Galaxy definition, a large system of stars held together by mutual gravitation and
isolated from similar systems by vast regions of space. See more.
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.
Sep 17, 2012 ... If there were only major galaxies with spiral arms, like Andromeda and the Milky
Way, then a formal definition might not be necessary – you ...
a. Any of numerous large-scale aggregates of stars, gas, and dust that constitute
the universe, containing an average of 100 billion (10<sup>11</sup>) solar masses and ...
galaxy meaning, definition, what is galaxy: one of the independent groups of
stars in the universe. Learn more.
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 ...
Meaning, pronunciation and example sentences, English to English reference ...
1.1 (the Galaxy) The galaxy of which the solar system is a part; the Milky Way.
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 ...
astronomy : any one of the very large groups of stars that make up the universe.
the Galaxy : the galaxy in which we live. : a large group of important or ...