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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"
Unraveling NGC 3169
06/11/2015
Starburst Galaxy Messier 94
23/10/2015
Bright Spiral Galaxy M81
17/10/2015
Galaxy, Stars, and Dust
12/10/2015
M83: The Thousand-Ruby Galaxy
08/10/2015
Ultraviolet Rings of M31
24/07/2015
M101: The Pinwheel Galaxy
14/06/2015
Trio Leo
09/05/2015
M51: The Whirlpool Galaxy
02/05/2015
Massive Nearby Spiral Galaxy NGC 2841
28/04/2015
One-Armed Spiral Galaxy NGC 4725
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16/04/2015
NGC 2903: A Missing Jewel in Leo
10/04/2015
M106: A Spiral Galaxy with a Strange Center
16/02/2015
M100: A Grand Design Spiral Galaxy
11/02/2015
In the Arms of NGC 1097
09/01/2015
Cetus Duo M77 and NGC 1055
26/12/2014
The Infrared Visible Andromeda
13/12/2014
Bright Spiral Galaxy M81
19/11/2014
Arp 188 and the Tadpole's Tail
25/08/2014
Spiral Galaxy NGC 6744
08/08/2014
M106 Across the Spectrum
05/07/2014
In the Center of Spiral Galaxy M61
20/05/2014
Massive Nearby Spiral Galaxy NGC 2841
21/04/2014
Messier 63: The Sunflower Galaxy
13/03/2014
NGC 2683: Edge-On Spiral Galaxy
05/02/2014
Spiral Galaxy M83: The Southern Pinwheel
28/01/2014
M83 Star Streams
17/01/2014
The Hydrogen Clouds of M33
26/12/2013
The Jets of NGC 1097
14/11/2013
M106 Close Up
03/10/2013