A Columbus of Space Kitap Açıklaması: “After that the time passed quietly. We ate our meals and went to bed and rose as regularly as if we had been at home. In one respect, however, things were very different from what they were on the earth. We had no night! The sun shone continually, although the sky was black and always glittering with stars. None of us needed to be told by our conductor that this was due to the fact that we no longer had the shadow of the earth to make night for us when the sun was behind it. The sun was now never behind the earth, or any other great opaque body, and when we wished to sleep we made an artificial night, for our special use, by closing all the shutters. And there was no atmosphere about us to diffuse the sunlight, and so to hide the stars. We kept count of the days by the aid of a calendar clock