Uhh, one little problem...
When the professor's daughter first sees the spaceship, she walks right up to it. Next the professor and the hero does the same. Nobody seems afraid to approach the ship UNTIL Enid is kidnapped; then the hero doesn't think to go to the ship to rescue her - just leaves her there, instead diddling around looking for help - some hero!
Oh and another - the hero is told (at 9:30) he has until 11 to try his rescue attempt before military action is taken against the ship, so what does he do? He wastes time sitting around to write up his newspaper story! Duh!
Well, it is just a movie but these do strike me as being shall we say, slightly illogical?