SpaceRef - Astronautics - Web Directories

Brian's Space Hotlist - A large collection of links to a wide variety of space related websites.

Clark's Favorite Space Links - A massive link collection about everything having to do with space exploration.

Jacqmans Spaceflight History Homepage - This site is about world spaceflight history, manned and unmanned rocket launches, astronauts, space patches, and photos.

Jason's Return to the Moon Web Site - This web site is focused on space exploration with an emphasis on a return to the Moon. Extrasolar planet detection is discussed as well.

Jens A. Lerch's Astronautics Page - A collection of information and links about current and future launch vehicles and spacecraft, launch statistics - and space related humor. Features a flying Roton paper scale model.

Rory Lindsay's Space Site - Website in New Zealand concerning general space topics including reusable rockets, lunar and Mars colonisation, space stations, space tourism, and terraforming.

Steven Pietrobon's Space Archive - This site contains launch vehicle manifests and records, an unofficial space shuttle manifest, launch guide, press kits and images, Saturn V, Space Shuttle and SSTO trajectory simulation programs, Ausroc updates, papers and images, and other space information.

Sven's Space Place - A website dedicated to presenting web resources on spaceflight history, space radio tracking, and space technology.

Terra Spacedock - An access point to links, documents, resources and other information on humankind's current and future endeavors in space. It serves to inform the public on these efforts and how they can be involved and how they're affected.

The Satellite Encyclopedia - This website features a searchable guide to all satellites featuring more than 4,000 pages. Launch vehicles, orbital parameters, and service footprints are just a few of the features this site has to offer. This is quite a resource. A downloadable shareware version is also available.

World Spaceflight News - A large collection of information about the Space Shuttle, the International Space Station, Mars exploration, and more.