This image is a derivative work of the following images: File:Milky_Way_Spiral_Arm.svg licensed with GFDL 2009-05-05T14:02:01Z Vonvon 518x451 (10867 Bytes)
This image is a derivative work of the following images: File:Milky_Way_Spiral_Arm.svg licensed with Cc-by-sa-3.0-migrated, GFDL 2009-05-05T14:02:01Z Vonvon