Spacecraft To Test Einstein’s Theory Of Relativity

Does E really equal mc squared?
In what is billed to be the largest scientific instrument ever built, scientists plan to use three spacecraft flying three million miles apart to fire laser beams at each other across the emptiness of space in a bid to finally prove whether a theory proposed by Albert Einstein is correct.

Physicists hope the ambitious mission will allow them to prove the existence of gravitational waves — a phenomenon predicted in Einstein’s famous theory of general relativity and the last piece of his theory still to be proved correct, reports the Telegraph…