The first story here is a bizarre one. It is about a future Earth that wants a peaceful existence so they banish a scientist that is creating a death ray. When aliens invade though they communicate with him on the moon through a very weird and impractical way. Kind of a preposterous story, with a pro-war twist. The second story is a fairly typical one about invading Martians, though it goes off on a weird tangent that the martians taught us everything we know about science. The third story takes a step up from preposterous to ludicrous with a story that makes little sense (it is about giant aliens that use our solar system as a plaything.) There follows a page on mysteries of space and then another on miniature meteors and then another page on Pluto. The final story deals with a future and greedier mankind that seek to take over an alien paradise planet. The locals do not resist, but in the end the Earthlings pay the price. Overall this was a pretty weak episode, the morals of the story were either pointless or kind of stupid. Not the best offering in the series.