Directories
Links
Astronomy by ExploreSpace.com
Includes an online store, classifieds, telescope information, discussion forum, and astronomy links.
AstroLinks - Internet's Astronomy Guide
http://www.cosmobrain.com/cosmobrain/astrolinks.html
Cosmobrain's Astrolinks is a complete guide for Astronomy on the web. Only selected links.
Sky Router
Categorized sets of astronomical links.
Galactic Surf
Web portal with extensive collection of internet links on astronomy and space topics.
Cosmobrain Astronomy and Astrophysics
Helpful index of links relating to many different aspects of Astronomy.
Astronomylinks.com
Over 500 astronomy and space related links, updated frequently. Submit your own link.
LLEK Bookmarks Scientific Search Engines - Astronomy
http://llek.de/english/thematic/nature/astronomie_e.htm
A comprehensive catalog of scientific resources and media worldwide but especially in German and English: Directories of Astronomy Journals; Astronomy-related catalogs of scientific search engines; additional starting points and sites of special interest.
The Telson Spur: A Way Station for Snark Hunters
http://www.snark.org/~pjhughes/
The Snark Hunter's Page is a meta-list of mainly academic resources organized on the theme of necessity vs. contingency in the study of time and evolution.