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Spiral galaxy - Wikipedia

en.wikipedia.org/wiki/Spiral_galaxy

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

Spiral Galaxies - SDSS

cas.sdss.org/dr6/en/proj/basic/galaxies/spirals.asp

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 ...

Spiral Galaxy | NASA

www.nasa.gov/multimedia/imagegallery/image_feature_2132.html

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

Spiral Galaxy | COSMOS

astronomy.swin.edu.au/cosmos/S/spiral galaxy

When Hubble developed his classification system for galaxies based on their appearance in optical light, he divided the spirals into those in which the spiral arm ...

Galaxies, Galaxy Information, Galaxy Facts, News, Photos ... - Science

science.nationalgeographic.com/science/space/universe/galaxies-article/

A composite image of the Messier 81 (M81) galaxy shows what astronomers call a "grand design" spiral galaxy, where each of its arms curls all the way down ...

Spiral Galaxy Facts - SoftSchools

www.softschools.com/facts/space/spiral_galaxy_facts/438/

Spiral galaxies get their name by the fact that they have a spiral or whirl shape. The "arms" of the spiral are the areas where stars are formed. These arms appear  ...

Classification of Galaxies

www.astro.cornell.edu/academics/courses/astro201/galaxies/types.htm

Apr 18, 2000 ... There are three main types of galaxies: Elliptical, Spiral, and Irregular. Two of these three types are further divided and classified into a system ...

What process creates and maintains the beautiful spiral arms ...

www.scientificamerican.com/article/what-process-creates-and/

Before delving into an answer, it is important to note that the spiral arms of galaxies are not fixed, solid objects; rather, they are patterns of bright stars and gas ...

Spiral and elliptical galaxies - damtp

www.damtp.cam.ac.uk/research/gr/public/gal_class.html

The classification of galaxies due to Hubble (1925) remains the most popular in use today. There are two main categories, the spiral and elliptical galaxies, but ...

Types of Galaxies - Spiral, Elliptical & Irregular Galaxies - Space Facts

space-facts.com/galaxy-types/

Spiral galaxies are the most common type in the universe. Our Milky Way is a spiral, as is the rather close-by Andromeda Galaxy. Spirals are large rotating disks ...

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Spiral Galaxy Facts & Definition - Space.com

www.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

coolcosmos.ipac.caltech.edu

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 - Windows to the Universe

www.windows2universe.org

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 ...