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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"
Infrared Andromeda
21/07/2007
NGC 6384: Beyond the Stars
12/07/2007
NGC 4449: Close-Up of a Small Galaxy
10/07/2007
Bright Galaxy NGC 2903
06/07/2007
Messier 65
01/06/2007
Bright Spiral Galaxy M81 in Ultraviolet from Galex
15/05/2007
Small Galaxy NGC 4449
03/05/2007
M81 in Ursa Major
27/04/2007
The Arms of NGC 4258
11/04/2007
NGC 1365: Majestic Island Universe
28/03/2007
NGC 2442: Galaxy in Volans
15/03/2007
Barred Spiral Galaxy M95
14/03/2007
Moon Over Andromeda
28/12/2006
NGC 1055 and M77
15/12/2006
The Outskirts of M77
07/12/2006
In the Arms of NGC 1097
01/12/2006
Unusual Starburst Galaxy NGC 1313
28/11/2006
Hydrogen in M33
23/11/2006
M51: Cosmic Whirlpool
11/11/2006
Hidden Galaxy IC 342
05/10/2006
M33: Spiral Galaxy in Triangulum
14/09/2006
Dusty Spiral M66
02/09/2006
Extra Galaxies
31/08/2006
Barred Spiral Galaxy NGC 1300
27/08/2006
Bright Galaxy M81
07/07/2006
Spiral Galaxy NGC 2403 from Subaru
05/07/2006
Infrared Andromeda
09/06/2006
Galaxy Wars: M81 versus M82
15/04/2006
Trio Leo
09/03/2006
NGC 1309 and Friends
09/02/2006