• http://hubblesite.org                                                                    Hubble Space Telescope 
• www.nasa.gov                                                                              NASA
• www.aiaa.org                                                                                American Institute of Aeronautics and Astronautics
• http://planetary.org                                                                      The Planetary Society
• http://kepler.nasa.gov                                                                   Kepler Mission: Search for Habitable Planets
• www.jpl.nasa.gov                                                                          JPL Propulsion Lab
• www.eofcosmos.org                                                                        Encyclopedia of the Cosmos
• www.seds.org                                                                                  Students for Exploration & Development of Space
• www.seti.org                                                                                    SETI Institute
• www.spaceweather.com                                                                  Space Weather
• www.obspm.fr/encycl.encycl.html                                                    Extrasolar Planets Encyclopedia
• http://eaae-astro.org                                                                       European Associacion for Astronomy Educ.
• www.grc.nasa.gov/WWW/bpp                                                         NASA Breakthrough Propulsion Physics
• www.nasa.gov/centers/glenn/research/warp/warp.html                 Warp Drive, When?
• www.nasa.gov/mission_pages/constellation/main/index.html          How we will get back to the Moon
• www.zooniverse.org                                                                         Real Science Online - For Everyone! 

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