Free Online Courses

• Harvard Open Courses
• Khan Academy
• MIT Open Courseware
• Open Yale Courses
• OpenCourseWare Wikipedia
• Open Culture: free online courses from top Universities

Astronomy

• Pulsars Jodrell Bank Observatory, University of Manchester

• Astro Data

• NASA/IPAC Infrared Science Archive (IRSA)

• Books

• Handbook of Space Astronomy and Astrophysics and its Web Links

• Sky Maps

• V.M.A. Virtual Moon Atlas
• The Nine Planets A Multimedia Tour of the Solar System
• Your Sky, interactive planetarium
• Constellations and their Stars, sky maps and stars database
• The Constellations: sky maps and stars database

• Telescopes

  • Hubble Telescope Site
  • NASA Virtual Telescope
  • Moon & Clementine spacecraft
  • The Solar and Heliospheric Observatory
  • Chandra X-Ray Center

• Links

• Astronomy Free Software
• Astronomy Magazine
• Level 5
• Sky & Telescope
• Unione Astrofili Italiani

Space

• Encyclopedia Astronautica
• Celestia 3D space simulator
• Orbiter Space Flight Simulator
• NASA
• JPL New Millennium Program
• NASA's Eyes
• NASA Global Climate Change
• NASA Image and Video Library

• Essays

• Getting Space Exploration Right, Robert Zubrin, The New Atlantis, 8 (2005)

• News

• Bad Astronomy
• Space Daily
• Spacetoday
• Space.com: NASA, Space Exploration and Astronomy News.
• Spacefellowship
• Phys.org Space News
• NBC Space News
• BBC Space News
• Universe Today

• Hardware

• Bigelow Aerospace
• Blue Origin
• SpaceX
• Virgin Galactic
• Spaceport, Truth or Consequences, New Mexico USA.
• Spaceport, Sheboygan, Wisconsin USA.

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