Wikipedia article about the several schemes in use by which galaxies can be classified.

Contains information of the types, dynamics, observations, and formation of galaxies.

Research group primarily interested in high energy activities in galaxies, particularly the interplay between massive stars and the interstellar medium.

Gives mathematical measurements relating this galaxy that orbits the Milky Way. Includes history about first known discoveries and links to photo galleries.

Spiral galaxies with short descriptions and photos.

Java-based viewing tool that allows the user to view galaxy surveys such as the Hubble Deep Field, using their browser.

A collection of hundreds of review articles. Topics covered include normal, peculiar and interacting galaxies, as well as galaxy evolution and galaxy clusters. Part of Caltech's "LEVEL 5" knowledgebase of extragalactic astronomy and cosmology.

Research group at the Ludwig-Maximilians-University Observatory studying the structure and evolution of galaxies, especially stellar dynamics, stellar populations and galaxy formation from the point of view of optical and near-infrared astronomy.

Includes a catalog of globular clusters, photos, and brief description.

Classifications, properties, and structures and dynamics.

Project at Lawrence Berkeley National Lab to search for supernovas in very remote galaxies. This provides an accurate means of measuring the distances to remote galaxies and thereby determining the age of the universe.

Data, observation notes, and more about globular clusters within the galaxy.

Interactive project that allows the user to participate in a large-scale project of galaxy research: classifying millions of galaxies found in the Sloan Digital Sky Survey.

Lectures given in 2006 by Julien Devriendt at Oxford University, which include an introduction to galactic dynamics and a primer on hierarchical galaxy formation.

Contains information about the growth of various galaxies. Also includes images, news, and a glossary.

A review article for non-specialists.

Galaxies with their descriptions.

Includes a set of notes by Nick Strobel. Topics include the structure of the Milky Way, the characteristics of other galaxies, and finding distances to other galaxies.

Many selected links to websites dedicated to galaxies.

NASA Windows to the Universe. Includes illustrations and introductory information about a variety of galaxies.

Some useful information about the formation of galaxies.

Purpose is to understand the creation of galaxies and the universe has evolved. Plans to study distant galaxies at optical, infrared, and radio frequencies.

HST and ISO Results.