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Lasers & Sources

Largest scientific instrument ever built to prove Einstein's theory of general relativity

The Telegraph
14 May 2010

Three spacecraft flying three million miles apart are to fire laser beams at each other across the emptiness of space in a bid to at last prove whether a theory proposed by Albert Einstein is correct.

The mission, a collaboration between NASA and the European Space Agency, will use three spacecraft flying in formation while orbiting the sun, with each housing floating cubes of gold platinum.

Laser beams fired between the spacecraft will then be used to measure minute changes in the distance between each of the cubes, caused by the weak waves of gravity that ripple out from catastrophic events in deep space.

Full story from the Telegraph