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96 seventy-five miles apart, as you know. Even to have been seen at all from both places, it would. have to have been huge--much larger than two hundred and fifty feet in diameter. The human eye wouldn't resolve an object that size, at such a distance and height." {p. 113) exact size. "T haven't worked it out," said Redell. "But I can give you a rough idea. The human eye can't resolve any object that subtends less than three minutes of arc. For instance, a plane with a hundred-foot wing span would only be a speck twenty miles away, if you saw it at aun all." "But this thing was seen clearly eighty-seven miles away--or even more, if it wasn't midway between the two cities. Why, it would have to be a thousand feet in diameter." "Even larger." Redell was silent a moment. "What was the word Mantell used-- ‘tremendous'?" I tried to visualize the thing, but my mind balked. One thing was certain now. It was utterly impossible that any nation on earth could have built such an enormous airborne machine. just to think of the force required to hold it in the sky was enough to stagger any engineer. We were years away--perhaps centuries--from any such possibility. As if he had read my thoughts, Redell said soberly, "There's no other possible answer. It was a huge space ship--perhaps the largest ever to come into our atmosphere." It was clear now why such desperate efforts had been made to explain away the object Mantell had chased. "Well, first," said Redell, "it wasn't any remote-control guided missile. I'll say it again; it would be sheer insanity. Suppose that thing had crashed in Macon. At that speed it could have plowed its way for blocks, right through the buildings. It could have killed hundreds of people, burned the heart out of the city. "If it was a missile, or some hush-hush experimental job, then it was piloted. But they don't test a job like that on any commercial airways. And they don't fool around at five thousand feet where people will see the thing streaking by and call the newspapers. "Take the Godman Field saucer. At one time, it was seen at places one hundred and ce Lt Ne ee a de It was an odd thing; I had, gone over the Mantell case a dozen times. I knew the object was huge. But I had never tried to figure out the object's "How big do you think it was?" I asked quickly. This could be the key I had tried to find. "What about that Eastern Airlines sighting?" I asked.