For 65 years, the Mojave Desert has spawned the fastest, highest-flying and most agile airplanes in the world. This vast expanse of scrub and Joshua tree forests encompasses the U.S. Air Force's deadly-secret Area 51 in Nevada, Lockheed Martin's Skunk Works in Palmdale, California, and, at Mojave airfield itself, Burt Rutan's sci-fi enclave, Scaled Composites.

If California is the nursery of the alternative space agenda, Mojave is the crib. Here—just a few miles from Edwards Air Force Base, where the remnants of Lockheed Martin’s ill-fated, billion-dollar X-33 orbital space plane sit mothballed—seven private rocket companies have set up shop. Most famous is of course Scaled Composites, whose majordomo, Burt Rutan, is widely expected to capture the $10 million X Prize for the first private vehicle to travel to space twice in two weeks. But at the lesser-known XCOR Aerospace, work proceeds apace.

Turning a fighter into a bomber may seem like trying to convert a Honda S2000 roadster into a pickup truck. Fighters, which are designed to dogfight with hostile airplanes and perform short-range attack missions, are fast and agile; bombers are made to haul heavy loads for thousands of miles. But Lockheed Martin is designing a fighter-bomber hybrid based on the F-22 Raptor fighter that's in flight-testing at Edwards Air Force Base in California.