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The primary difference between lenticular and spiral galaxies lies in the presence or absence of spiral arms around the galaxy's central bulge. According to the Sloan Digital Sky S...

About Spiral Galaxies
Eighty percent of the galaxies in the universe can be classified as spiral galaxies. The distinguishing characteristics of spiral galaxies are the appearance of "arms" that seem to spiral around a central bulge of stars and dust--hence the name. The... More »
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Spiral galaxy


A spiral galaxy is a certain kind of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae and, as such, forms part of the ...

Spiral Galaxies


The most common type of galaxy is called a "spiral galaxy." Not surprisingly, spiral galaxies look like spirals, with long arms winding toward a bright bulge at the ...

These galaxies are subdivided into classes based on how tightly the arms are wound, with the tightest classified as Sa and those with the most loosely wound arms as Sd. Some spiral galaxies have a "bar" passing through the center off which the spiral arms extend. Withi... More »
By John P. Millis, Ph.D, About.com Guide

Spiral Galaxy Facts & Definition - Space.com


Aug 15, 2013 ... A spiral galaxy has a distinct winding shape. Most of the galaxies observed by astronomers are spiral galaxies.

What is a spiral galaxy? | Cool Cosmos


Spiral galaxies get their name from the shape of their disks. In a spiral galaxy, the stars, gas and dust are gathered in spiral arms that spread outward from the ...

Spiral Galaxies - Utk


The figure below right shows a nice spiral galaxy, M100, which is in the Virgo cluster Another beautiful example of a spiral galaxy is M83. Presumably our own  ...

Spiral Galaxies - Windows to the Universe


Spiral galaxies may remind you of a pinwheel. They are rotating disks of mostly hydrogen gas, dust and stars. Through a telescope or binoculars, the bright ...

Spiral Galaxy | NASA


Dec 16, 2011 ... Resembling festive lights on a holiday wreath, this NASA/ESA Hubble Space Telescope image of the nearby spiral galaxy M74 is an iconic ...

Popular Q&A
Q: What are spiral galaxies known for?
A: There Known for being spirals retard its in the name. Read More »
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Q: How old is the spiral galaxy?
A: people are exactly 12,998 years old cause that is what i am thinking in my brain at this moment right now Read More »
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Q: What is the shape of a Spiral Galaxy.
A: Spiral galaxies are named for the (usually two armed) spiral structures that extend from the centre into the disk. The spiral arms are sites of ongoing star for... Read More »
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Q: What are the parts of a spiral galaxy.
A: The PartsOf galaxy Is Natural Gases Nd parts OfChemical stars. Read More »
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Q: What is a spiral galaxy?
A: Spiral Galaxy: a galaxy exhibiting a central nucleus or barred structure from which extend curved arms of higher Read More »
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