My calculations suggested that in about three hours from the take-off the torpedo would be moving almost directly toward Mars; and from time to time I took observations through the wide-angle telescopic periscope that is mounted flush with the upper surface of the torpedo’s shell, but the results were not entirely reassuring. In two hours Mars was dead ahead—the arc of the trajectory was not flattening as it should. I became apprehensive. What was wrong? Where had our careful computations erred? I left the periscope and gazed down through the main keel port. Below and ahead was the Moon, a gorgeous spectacle as viewed through the clear void of space from a distance some seventy-two thousand miles less than I had ever seen it before and with no earthly atmosphere to reduce visibility. Tycho, Plato, and Copernicus stood out in bold relief upon the brazen disc of the great satellite, deepening by contrast the shadows of Mare Serenitatis and Mare Tranquilitatis. The rugged peaks of the Apennine and the Altai lay revealed as distinctly as I had ever seen them through the largest telescope. I was thrilled, but I was distinctly worried, too. Three hours later I was less than fifty-nine thousand miles from the Moon; where its aspect had been gorgeous before, it now beggared description, but my apprehension had cause to increase in proportion; I might say, as the square of its increasing gorgeousness. Through the periscope I had watched the arc of my trajectory pass through the plane of Mars and drop below it. I knew quite definitely then that I could never reach my goal. I tried not to think of the fate that lay ahead of me; but, instead, sought to discover the error that had wrought this disaster. For an hour I checked over various calculations, but could discover nothing that might shed light on the cause of my predicament; then I switched off the lights and looked down through the keel port to have a closer view of the Moon. It was not there! Stepping to the port side of the cabin, I looked through one of the heavy circular glasses out into the void of space. For an instant I was horror stricken; apparently just off the port bow loomed an enormous world. It was the Moon, less than twenty-three thousand miles away, and I was hurtling toward it at the rate of thirty-six thousand miles an hour!