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Spiral galaxies are the most common type of galaxy in the universe, making up 77 percent of all known galaxies. These galaxies have long arms that wrap around a bright bulging...

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


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: How to Classify Spiral Galaxies
A: Classifying Spiral Galaxies Observe the galaxy's nuclear bulge. The nuclear bulge is the galaxy's center portion. If it is large and prominent, the galaxy is an... Read More »
Source: www.ehow.com
Q: What are spiral galaxies known for?
A: There Known for being spirals retard its in the name. Read More »
Source: wiki.answers.com
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 »
Source: wiki.answers.com
Q: What is Sc spiral galaxy?
A: ( ¦es¦sē ¦spī·rəl ′gal·ik·sē ) (astronomy) A class of spiral galaxy characterized by spirals with the largest and most loosely coiled arms and the smallest cent... Read More »
Source: www.answers.com
Q: What is spiral galaxy?
A: n. A galaxy having a spiral structure. Read More »
Source: www.answers.com