physicist." He then aimed the other rocket and checked elevation with the clinometer. "The fuels are standard, and I worked out the trajectories on the computer. Ready with your match? These are going to explode in the canal, and get everybody in the Canal Casino all wet." He peeked over the fence, to see how the regular display was doing. "Here comes their finale. Ready, set, light!" Covered by the launching of the last of the official display, their two rockets arced up and away. One of them did explode in the canal, and most of the Casino's patrons did get wet. But the other wobbled off to the right, landed on the roof of Harvey's bachelor home and burned it to the ground. Dr. Morton sat numbly in front of his typewriter, staring at a letter. He couldn't seem to find the right words for what he wished to say. He tried to derive inspiration from a glossy photograph lying on the table beside him. It had what looked like another skyrocket trail on it. Before he could answer it, the door opened and Harvey walked in, accompanied by two men with muscles. "I haven't seen you since the accident, Professor," he said. "I've been trying to write you a letter," said Dr. Morton, "to tell you how sorry I am about what happened. And I also have to thank you for getting that law against fireworks through the Council. I am extremely sorry it took your house burning down to convince them." "I keep my promises," said Harvey. One of the men with muscles turned the radio on, loud. "We're trying to get up a collection among the staff to help pay for your losses," said Dr. Morton, "but the director suggested a more permanent kind of remembrance." He picked up the photograph. "This will be one of the brightest objects in the sky, in a few months. It won't be back again for thousands of years, but it will be around for a good while. We've just discovered it, and it is our privilege to call it 'Harvey's Comet.'" "That's nice," said Harvey. The first of the two men went around pulling down blinds; the other went into the bathroom and starting filling the tub. "Well," said the physicist, looking tired and old, "I guess there's nothing more I can say." "Oh, yes, there is, Professor," said Harvey, with a sudden grin on his face. He turned to his muscle men. "You two guys cut out the comedy and bring it in, now."