alien chasersRichard Hoagland When a friendly journalist leaked to Richard Hoagland details of the plot of the upcoming film Mission to Mars, he was simultaneously ecstatic and suspicious. The film apparently depicts the discovery of an immense artificial structure on the martian surface that resembles a face — a touch eerily evocative of Hoagland's belief that the Viking I probe photo from 1976 depicts precisely such a structure in the Cydonia region of Mars' northern hemisphere. But that unrecognized nod to his theories only gave him pause; he notes that his longtime adversary, NASA — whose officials have sought to...