Scientists propose using the Sun's gravity to beam energy between stars -- and maybe power interstellar civilization

The Sun could one day power more than just the Solar System.

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Claudio Maccone ,Slavag Turyshev ,Alexander Madurowicz ,Propulsion Laboratory ,Carleton University Senior Research Fellow Viktor Toth ,General Relativity ,Solar Gravity Lenses ,Solar Gravitational Lens ,Extraterrestrial Intelligence ,