This page is quite done yet, but you're welcome to take a look around.
The first place to look: the sci.astro FAQ. Unfortunately,
sci.astro itself is clogged with crackpots.
sci.space.news is a moderated newsgroup run out of JPL.
Graphics files of the Viking Landings
Galileo home page
Russian (FSU) Space Missions and Vehicles
Russian State Cosmonauts Training Centre
Space Digest archives
Commercial space info
Kennedy Space Center
NASA Home page
Microcosm's low-cost rockets
The visible comets page is
another winner from JPL.
Hale-Bopp info (ESO)
Hale-Bopp info (JPL)
Shoemaker-Levy 9 info
I usually refer to the
page for information about the brightest satellites.
OrbiTrak is also very good,
with information about many more satellites, but not quite as easy to
Satellite information (in the UK)
Satellite information (in Germany)
Mirwatch (Mir information)
Micro Orbiter 3.0 is a great (shuttle tracking) program
lots of great astronomy site links, astro club news, astro software, weather
The International Dark-Sky Association Web page
AstroNet on-line astronomy digest (see access directory)
ASTROMART, your free Internet astro classified marketplace
Other astronomy links
International Astronomical Union, Central Bureau of Astronomical Telegrams
Meteorites and Impacts Advisory Committee (MIAC) to the Canadian Space Agency
Sun and solar eclipse info
Other natural earth satellites