| NASA: | The United States' and the world's leading space agency, the National Aeronautics & Space Administration's website features a vast amount of multimedia information about space exploration, space travel, living and space and related matters. |
| NASA Human Spaceflight: | Contains information on the ISS, Space Shuttle, Mars exploration and more. |
| ESA: | The European Space Agency's website features information on Europe's space projects as well as general space science information. |
| The Planetary Society: | The world's largest space interest group, the Planetary Society has more than 100,000 members from over 140 countries and continues to influence and push forward the development of projects and technology for space and planetary exploration. |
| SETI@home: | Become part of this exciting and revolutionary search for our neighbors in the galaxy. |
| The National Science Foundation: | The United States' agency to " To promote the progress of science; to advance the national health, prosperity, and welfare; and to secure the national defense." |
| International Space Station: | From Discovery.com, this website contains information regarding the International Space Station and about living in space. |
| International Space Station Home: | Boeing's ISS Home page. |
| Mir Space Station: | Information on the long-lasting Russian Space Station. |
| HubbleSite: | The official Hubble Space Telescope Site, HubbleSite contains information about the Hubble and images from space captured by the Hubble itself, including stunning cosmic desktop pictures, or wallpaper, for your computer. |
| NCC Hubble Space Resources: | Has links to other Hubble Websites. |
