Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
MIT OpenCourseWare This link opens in a new window
MIT OpenCourseWare is a web-based publication of virtually all MIT course content. OCW is open and available to the world and is a permanent MIT activity.
Astronomy Web Resources
Eric Weisstein's World of Astronomy This link opens in a new window
A free online encyclopedia covering many fields in astronomy, maintained by Wolfram Research.
Google Sky This link opens in a new window
Includes a number of different ways to explore the universe. The initial view shows the visible universe and is a mosaic of images from the Sloan Digital Sky Survey, the Digitized Sky Survey and the Hubble Space Telescope. Select the thumbnail images at the bottom of the display to bring up the planets, the constellations, highlights from the Hubble Space Telescope, famous stars, galaxies and nebulae, views of the universe in the x-ray, ultraviolet and infrared and podcasts about upcoming astronomical events from Earth and Sky Podcasts.
NASA's Planetary Photojournal This link opens in a new window
Continuously-updated access to approximately 2,000 images from various solar system exploration programs.
Nine Planets This link opens in a new window
A multimedia tour of the Solar System.
Portal to the Universe This link opens in a new window
Features news, blogs, video podcasts, audio podcasts, images, videos and more. A range of "widgets" (small applications) have also been developed to tap into all sorts of existing "live data", such as near-live pictures of the Sun, live positions of spacecraft or live observations from telescopes.
SIMBAD Astronomical Database This link opens in a new window
From the Centre de Donnees astronomiques de Strasbourg, SIMBAD brings together basic data, cross-identifications, observational measurements, and bibliography, for celestial objects outside the solar system: stars, galaxies, and nonstellar objects within our galaxy, or in external galaxies.
Physics Web Resources
Eric Weisstein's World of Physics This link opens in a new window
A free online encyclopedia covering many fields in physics and astrophysics, maintained by Wolfram Research.