Gravitationaly Attractive

Three spacecraft flying three million miles apart are 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.

"Gravitational waves are the last piece of Einstein's theory of general relativity that has still to be proved correct."

Gravity is such a weak molecular force, I can see why they need to use this extreme method to test. I wish them the best of luck with it. It seems the more we find out about the universe, the more it seems Einstein was correct.