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[[Category:Galaxies]] ...

=== Spiral galaxies === === Elliptical galaxies === ...

...ay [[universe]], including the existence of large-scale structures such as galaxies. The theory was proposed by [[Alan Guth]] in the 1970s. ...oblem solved by inflation is the origin of large-scale structures, such as galaxies. Inflation theory says that in a slow expansion of the universe, [[quantum ...

[[Star]]<nowiki/>s, [[Galaxy|galaxies]] and other objects emit energy in the form of [[radiation]]. It is [[Measu ...

|[[Image:Messier51.jpg|thumb|200px|The arms of [[Spiral galaxy|spiral galaxies]] often have the shape of a logarithmic spiral, here the [[Whirlpool Galaxy ...pitch angle for a galaxy such as the Milky Way. In general, arms in spiral galaxies have pitch angles ranging from about 10 to 40 degrees. ...

...e, measurement of eclipsing binaries offers a way to gauge the distance to galaxies. Accuracy at the 5% level up to a distance of around 3 million parsecs.<ref ...sions to be used as standard candles to measure the distance to their host galaxies, because the visual magnitude of the supernovae depends primarily on the di ...

...e universe, hidden far beyond our vision. They could have formed their own galaxies and solar systems too. ...

...The first stage is the formation of condensations ultimately to become the galaxies; this, as we have seen, started off an expansion, which then '''automatical ...and million years, he sees us shrinking; atoms, animals, planets, even the galaxies, all shrink alike; only the intergalactic spaces remain the same. The earth ...