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.
The Earth's galaxy is known as the Milky Way. Our solar system, made up of the
Sun and the planets that encircle it, is a tiny part of that galaxy. A galaxy can also
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 ...
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 ...
galaxy meaning, definition, what is galaxy: one of the independent groups of
stars in the universe. Learn more.
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 ...
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.
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 ...
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 ...