For a science fiction story to work it has to be at least plausible, We can excuse things like faster than light travel because it might be possible with some as-yet unknown science. LiS missed that in the episode where Mrs Robinson went into the upper atmosphere attached to a balloon. OK, but the balloon was inflated with air. Not even hot air, just blown up like a party balloon using a huge pump. No, just no. It might get blown along on wind, but would stay pretty much at ground level.