transoceanic flights were just beginning to be made. In the story flights between Earth and the Moon are common and the first interplanetary flight is being flown.

Plot summary

In the foreword, "Tomorrow's World", the author comments on how the development of liquid-fueled rockets points to missions to the Moon and establishment of a lunar base in the near future. Then he points to Mars as the next obvious step in the exploration of the Solar System. He mentions the possibility of life on

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