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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
APODs including "Spiral Arms"
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
M81 versus M82
25/09/2013
NGC 5195: The Dot Under the Question Mark
31/08/2013
M74: The Perfect Spiral
11/08/2013
Twisting with NGC 3718
03/08/2013
Moon Over Andromeda
01/08/2013
Hidden Galaxy IC 342
18/07/2013
NGC 6384: Spiral Beyond the Stars
06/07/2013
One-Armed Spiral Galaxy NGC 4725
30/05/2013
Messier 77
10/05/2013
Grand Spiral Galaxy M81 and Arp's Loop
16/04/2013
Unraveling NGC 3169
28/03/2013
NGC 6822: Barnard's Galaxy
08/02/2013
The Arms of M106
06/02/2013
NGC 1309: Spiral Galaxy and Friends
16/01/2013
M33: Triangulum Galaxy
20/12/2012
NGC 1365: Majestic Spiral with Supernova
24/11/2012
Arp 188 and the Tadpole's Tail
08/11/2012
Galaxies, Stars, and Dust
13/10/2012
Spiral Galaxy NGC 5033
17/08/2012
21st Century M101
13/07/2012
IC 2574: Coddington's Nebula
22/06/2012
M65 and M66
15/06/2012