“Wouldn’t care for it,” he said. “They’re not my type. And besides, it’s twenty-three.” He made the correction himself.
Then things calmed down. They were—as one man put it—“a long way from home!”
“But what I want to know is why we can see the sun when we’re going away from it at several times the velocity of light?” demanded Tom.
“Well, your own problem answers your own question,” said Edith, patting her hair back into place. “Remember the square-wave problem? Well, in the transition-period, you are simultaneously obtaining all degrees from maximum negative to maximum positive including zero. Zero is where the ship, being out of space-warp, must drop below the speed of light. The sun receding is due to the persistence of vision that lasts between transition periods. Lord only knows how
