seriously need to update your targeting system. the towers dont attack the closest to end. that's the only reason i lost lives at all. not sure its possible to get past level 58 either, so increase gold amount per level and it would be more enjoyable. so im giving a 1/5 due to the poor target system.
space is not a vacuum...it is simply a low pressure area...electricity passes through space all the time as there are large amounts of metal dust floating around out there providing a large "wire"...solar winds also exist...earth actually receives debris from them daily