Good Websites to Visit

The NASA/IPAC Extragalactic Database is an online collection of cosmic images and data.

 This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.

Harvard's "Einstein's Lens" Supplemental Demonstration illustrates gravitational lensing conceptually using a wine glass.

Thanks to Universe Forum and the Harvard-Smithsonian Center for Astrophysics