|Interacting Galaxy M 51
M 51, the »Whirlpool« galaxy in the constellation Canes Venatici, is about 30 million light years away from our galaxy. (Bild: SDSS)
The Max Planck Institute for Astronomy (MPIA) in Heidelberg is one of three German astronomical institutes involved in the Sloan Digital Sky Survey (SDSS).
See also the SDSS homepage at the MPIA.