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Spiral Arms
Regions of stars and interstellar matter that extend from the center of spiral galaxies, forming a spiral pattern; in the Milky Way, these include the Orion Arm where our Solar System resides.
Source: esa.int
APODs including "Spiral Arms"
Seeing Through Galaxies
05/12/1997
Irregular Galaxy Sextans A
14/11/1997
IP Pegasi: Spiral Star
22/08/1997
M101: The Pinwheel Galaxy
05/08/1997
M81 in True Color
26/07/1997
M100: A Grand Design
01/06/1997
Barred Spiral Galaxy NGC 1365
19/05/1997
Spiral Galaxy M83 Credit and Copyright:
19/04/1997
Elliptical Galaxy NGC 4881 in Coma Credit:
06/11/1996
Grand Design Spiral Galaxy NGC 2997
30/10/1996
Leo Triplet Spiral Galaxy M65
12/08/1996
Unusual Spiral Galaxy M66
10/08/1996
M81 in True Color
14/07/1996
In the Center of the Whirlpool
25/04/1996
A Spiral Galaxy Gallery
09/04/1996
The X-ray Sources of M31
31/12/1995
Spiral Galaxy M83
12/09/1995