space
- SpaceToday.net — “space news from around the web”
- SpaceRef.com — “Space News as it Happens”
- Space Frontier Foundation: New Space News
- Space Politics — “Because sometimes the most important orbit is the Beltway…”
- SpaceWeather.com — “News and information about the Sun-Earth environment”
- Space Frontier Foundation
- National Space Society
- Planetary Society
- Alliance to Rescue Civilization
- The Case for Space Colonization — Now!
- Space Telescope Science Institute
- Hubble Telescope
- Zero-G
- Space Adventures
- Future Asteroid Interception Research (FAIR Society)
- Torino Scale (development) — current risks
- NASA's Deep Impact Mission
- Comet Shoemaker-Levy Collision with Jupiter
- SpaceDev, Inc.
