Article from NASA about the equivalence principle (which was one of the basic axioms used to develop general relativity) and various experiments that have been and will be undertaken to test its validity.

Review article by Clifford Will, published in Living Reviews in Relativity. Gives a complete survey of tests of general relativity using laboratory experiments and astronomical observations.

Article by Ingrid H. Stairs (University of British Columbia) published in Living Reviews of Relativity about how pulsar timing methods can be used to test different predictions of general relativity for the propagation of light, gravitational time dilation and the emission of gravitational waves.

A two part overview of the Shapiro radar bounce test of general relativity. (The two parts consist of a section for normal people, and one for nerds)

Thorough review article by Neil Ashby (University of Colorado) about the various relativistic effects that play a role in the operation of the Global Positioning System and other satellite navigation systems. Published in Living Reviews in Relativity.

Article by Clifford Will in Physics World about the way that gravitational physics has become a truly experimental science as tests of the special and general theories of relativity reach new levels of precision.

Article by Mark P. Haugan and Claus Lmmerzahl about the different versions of the equivalence principle (one of the basic assumptions that led to general relativity) and the various experiments that have been performed to test it, as well as those that are planned for the future.

Gravity Probe B is the relativity gyroscope experiment being developed by NASA and Stanford University to test two extraordinary, unverified predictions of Albert Einstein's general theory of relativity.

An experiment at the University of Washington seeks to determine whether the gravitational binding energy of an object generates gravity of its own.

Brief text by Neil Ashby (University of Colorado) about the influence of relativistic effects on the satellite navigation system GPS; from the "Matters of Gravity" newsletter.

Slides and audio for a talk given by Thibault Damour (IHES) at the Kavli Institute for Theoretical Physics (UCSB); information about the Parametrized Post-Newtonian Formalism, classical tests, and recent as well as future satellite tests of general relativity.

Covers current and past projects in experimental gravitational physics using Drag-Free Satellites including the Relativity Gyro, Equivalence Principle, and LISA.

A summary of tests of the foundations and predictions of special relativity, by Tom Roberts, Siegmar Schleif and others. Part of the Physics FAQ.

Describes proposed experiments to test whether the equivalence principle is violated when test masses of different chirality are used (parity violation). By Alan M. ("Uncle Al") Schwartz.

Early results from a mission to test two key predictions of Albert Einstein show he was right about at least one.