Images of interacting galaxies from the University of Alabama Department of Physics and Astronomy.
Images of colliding galaxies from the Ohio State University Department of Astronomy image gallery (including the Antennae).
Astrophysicist Joshua Barnes' web site at the University of Hawaii.
Cosmic Voyage, an IMAX film that includes a computer-simulated collision of galaxies.
The closest starburst galaxy, NGC253, is located 8 million light-years away in the constellation Sculptor.
Astro Web: an extensive list of astronomical sites on the web.
The Hubble Space Telescope page.