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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"
The Leo Triplet Galaxies from VST
03/08/2011
Supernovae in the Whirlpool
11/06/2011
M74: The Perfect Spiral
06/04/2011
NGC 5584: Expanding the Universe
30/03/2011
NGC 6384: Spiral Beyond the Stars
22/03/2011
Messier 106
19/03/2011
NGC 4449: Close-up of a Small Galaxy
25/02/2011
Spiral Galaxy NGC 2841 Close Up
19/02/2011
The Once and Future Stars of Andromeda
20/01/2011
NGC 3521 Close Up
13/01/2011
Fireworks Galaxy NGC 6946
01/01/2011
Hidden Galaxy IC 342
22/12/2010
M81 and Arp's Loop
09/12/2010
M33: Triangulum Galaxy
03/12/2010
Spiral Galaxy M66
13/11/2010
NGC 2683: Spiral Edge-On
11/10/2010
Arp 188 and the Tadpole's Tidal Tail
26/09/2010
Star Streams and the Sunflower Galaxy
11/09/2010
NGC 4911: Spiral Diving into a Dense Cluster
08/09/2010
NGC 1365: Majestic Island Universe
20/08/2010
Arp 286: Trio in Virgo
13/08/2010
Hydrogen in M51
11/06/2010
Spiral Galaxy NGC 3190 Almost Sideways
03/05/2010
Virgo Cluster Galaxy NGC 4731
29/04/2010
Unusual Spiral Galaxy M66 from Hubble
13/04/2010
Unusual Starburst Galaxy NGC 1313
30/03/2010
NGC 2442: Galaxy in Volans
25/03/2010
Galaxy Wars: M81 versus M82
24/03/2010
Messier 88
30/01/2010
M94: A New Perspective
14/01/2010