"Would you mind repeating that?""I said, sir, that Mr. Friden said, sir, that he sees a city.""A city?""Yes sir."Captain Webber rubbed the back of his hand along his cheek."You realize, of course, that that is impossible?" He called for the astronomer who'd sighted the thing.Frieden wasn't joking. It was a city, and it was impossible: an asteroid in space where no asteroid should have been -- and there on it, plainly visible, was a city that could only have existed back on Earth