Sean Mead's Space Links

Warp Drive When?: Consideration by a leading NASA scientist of the prospects for achieving propulsion breakthroughs that would enable interstellar travel.
Space Adventures: Space-related adventure tourism.
Space Transportation Programs: NASA transportation research site.
Mars Exploration Program: The Jet Propulsion Laboratory's promotional page for the Mars Exploration Program. It includes a screen saver depicting the Sojourner Rover crossing Mars.
X Prize Virtual World: The $10M prize for the first commercial space travel enterprise.

SETI@home: Search for Extraterrestrial Intelligence at Home: UC Berkeley's screensaver designed to use private PCs to analyze data from radiotelescopes searching for signs of extraterrestrial intelligence.
SETI Institute Online: A significant player in the SETI world.

Space.com: Helmed by Louis Dobbs, this site is a general space related site.
NASA: Central Homepage for the National Aeronautics and Space Administration.
J-Track 3D: A NASA site that allows you to view the flight paths of major satellites in an easy to use graphic interface.
NASA Jet Propulsion Laboratory: One of NASA's top Research & Development campuses.
Biospace 21: Greg Bear's column on the living conditions in space for long voyages.
Genesis Discovery 5 Mission Proposal: Sponsored by Caltech, this project seeks to examine the solar wind outside of Earth's zone of influence.
Palomar Digital Sky Survey (DPOSS): A survey of the Northern Hemisphere. Some of the images are present for download. The database will eventually reach 3 terabytes in size; i.e. it will likely be a Postgress database.
The Archimedes Institute: A directory of space law resources on the Internet.
NASA Space Telerobotics Program: Developing EVA and exploratory robots.
Space: The Mining Company's space site which should provide new selected web sites on a weekly basis.
The Anglo-Australian Observatory: Over 200 photos for starters, this site is kept updated and informative.
Space Imaging: Purchase 1m resolution images from satellites.
Requesting An Astronaut Appearance: NASA's site for requesting astronaut speakers.
MarsNews.com: News about Mars and potential missions to Mars.

gov.us.fed.nasa.announce: A Usenet newsgroup for NASA announcements.
sci.space: A Usenet newsgroup for space, space programs and space-related research.
sci.space.news: A moderated Usenet newsgroup for space-related news.
sci.space.policy: A Usenet newsgroup for space policy.
sci.space.science: A moderated Usenet newsgroup for space and planetary sciences.
sci.space.shuttle: A Usenet newsgroup for the space shuttle and the STS program.
sci.space.tech: A moderated Usenet newsgroup for technical issues relating to space flight.