Physics and Astronomy: Web Resources

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.

A free online encyclopedia covering many fields in astronomy, maintained by Wolfram Research.

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.

Continuously-updated access to approximately 2,000 images from various solar system exploration programs.

A multimedia tour of the Solar System.

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.

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.

A free online encyclopedia covering many fields in physics and astrophysics, maintained by Wolfram Research.