Interacting Galaxies

http://hyakutake1957.files.wordpress.com/2008/04/colliding-galaxies.png
http://cosmology.net/images/Collidinggalaxies5678.jpg
http://news.nationalgeographic.com/news/2006/10/images/061019-galaxies_big.jpg
http://www.spacedaily.com/images/supernova-discovered-pair-colliding-galaxies-antennae-bg.jpg
http://farm4.static.flickr.com/3614/3490531897_6426a8d0e7.jpg
http://www.foxnews.com/images/366647/0_21_galaxies_hubble_6.jpg
http://talklikeaphysicist.com/wp-content/uploads/2008/04/collidinggalaxy-1.jpg
http://physics.uwyo.edu/~stark/outreach/galaxy/colliding/
http://www.twinlitworlds.com/hubble/pix/jpgsfull/collision.jpg
http://mainland.cctt.org/biolab/images/Colliding_Galaxies_HST_Gif.gif
http://www.noao.edu/gateway/intergal2.gif
http://farm4.static.flickr.com/3628/3462762896_e4fdd54774.jpg
http://www.spacedaily.com/images/arp-87-pair-interacting-galaxies-bg.jpg
http://www.noao.edu/image_gallery/images/d5/vv150b.jpg
http://www.etsu.edu/physics/wars/arp107.jpg
http://coolcosmos.ipac.caltech.edu/cosmic_kids/learn_sirtf/images/interacting.gif
http://astro.uchicago.edu/~grodnick/gallery/galaxies/m51-irg_hogg.jpg
http://housefly.astro.princeton.edu/~rhl/PrettyPictures/M51-4x4.jpg