Constant thrust using only solar power and no propellants is already possible. J...

		seanflyon on July 31, 2014 \| parent \| context \| favorite \| on: NASA presents evidence that microwave thrusters se... Constant thrust using only solar power and no propellants is already possible. Just shine a light backwards, or better yet turn that solar panel into a mirror. What makes this so strange is that it is emission-less even counting photons.