We can’t make it so large that its own gravity will contain the reaction mass, so it has to be kept inside a very strong magnetic field created by huge magnets. You can’t put solar panels inside the reaction chamber, they would get destroyed.
We can’t make it so large that its own gravity will contain the reaction mass, so it has to be kept inside a very strong magnetic field created by huge magnets. You can’t put solar panels inside the reaction chamber, they would get destroyed.