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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"
Gangly Spiral Galaxy NGC 3184
20/09/2000
Andromeda Island Universe
08/09/2000
GLAST Gamma Ray Sky Simulation
22/07/2000
M63: The Sunflower Galaxy
27/06/2000
M51: The Center Of The Whirlpool
27/05/2000
M106: A Spiral Galaxy with a Strange Core
15/02/2000
Galaxy Wars: M81 Versus M82
09/02/2000
Spiral Galaxy In Centaurus
27/01/2000
The Century that Defined Galaxy
30/12/1999
Irregular Galaxy Sextans A
18/12/1999
NGC 4314: A Nuclear Starburst Ring
12/12/1999
M83: The Southern Pinwheel Galaxy from VLT
06/12/1999
Elliptical Galaxy NGC 4881 in Coma
21/11/1999
NGC 1365: Barred Spiral Galaxy
08/10/1999
M83: A Barred Spiral Galaxy
26/09/1999
NGC 1365: A Nearby Barred Spiral Galaxy
24/06/1999
NGC 4565: Needle Galaxy
17/06/1999
NGC 4414: A Telling Spiral
09/06/1999
NGC 4603 and the Expanding Universe
27/05/1999
GLAST Gamma-Ray Sky Simulation
12/11/1998
Seyfert Galaxy NGC 7742
23/10/1998
Spiral Galaxy NGC 1232
30/09/1998
M61: Virgo Spiral Galaxy
22/09/1998
M65 Without Moth
07/08/1998
NGC 4314: A Nuclear Starburst Ring
15/06/1998
M100: A Grand Design
06/06/1998
M83: A Barred Spiral Galaxy
25/05/1998
A Spiral Galaxy Gallery
14/03/1998
The Solar Neighborhood
25/02/1998
Dusting Spiral Galaxies
16/01/1998