General Relativity today.- Beyond Einstein's Gravity.- The Double Pulsar.- Testing Einstein in Space: The Gravity Probe B Relativity Mission.- Instruments for Gravitational Wave Astronomy on Ground and in Space.

This book offers a detailed, pedagogical introduction to general relativity. It includes a review of what may lie beyond and collects up-to-date essays on the experimental tests of this theory, including the precise timing of the double pulsar J0737-3039. Coverage also details the recent results of the Gravity Probe B mission.