this movie be standard goofy sci fi fare from the 50 . in it favor and the plot do manage to pull off an alien invasion without actually produce the aliens themselves . but come on now and if alien need energy and could absorb it from source like hydrogen bomb and why would they come to earth . why wouldn not they just suck it out of a star . the only credible reason for the presence of kronos be a direct attack on earth society and not the mere collection of energy . nothing like that be even intimate while kronos may have be build by a superior race but it activity on earth be the most primitive . the end that the scientist hero plan for kronos be base on nothing but pseudo scientific gibberish . it amount to the reverse the polarity gambit which have be use so much in bad scifi it have become a joke in itself . low and behold and this cause our unwanted visitor to release it collected energy . no one in power seem to care about the impact the release of that much energy ( which by the film end include and among other thing and the entire yield of a hydrogen bomb ) will have on the surroundings . and unfortunately and by the time the movie end and the surroundings be the suburb of los angeles . whoop .