Gravitational Waves

At www.telegraph.co.uk/science/space/7695994/Largest-scientific-instrument-ever-built-to-prove-Einsteins-theory-of-relativity.html May 9th … physicists from NASA and the ESA intend to search for gravitational waves – as predicted by Einstein. These are the last strand of the theory of general relativity  that has still to be proved correct. It is thought they are produced when massive objects such as collapsed stars and black holes accelerate through space – but they have yet to be detected. See also http://calderup.wordpress.com as Nigel Calder has an onrunning feature on Einstein.