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Forums for the discussion of relativity and all surrounding topics. all levels of interest welcome.

Drag-Free Satellite web page with definitions, history, modern applications, and current programs. Contains many links to relevant pages. Covers current and past projects in experimental gravitational physics using Drag-Free Satellites including the Relativity Gyro, Equivalence Principle, and LISA.

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.

A collection of experimental evidence disproving relativity presented without math all explained in laymen’s terms.