USA, U.S. Pentagon would be on studying a new suborbital bomber, called X-33, which characteristics are not common with these of the current bombers like B-2. The X-33 is developed to fly at 100.000 meters of altitude and a speed of 15 times the speed of a B-2, allowing it to take-off, reach and hit any world's place and return back to its base in 90 minutes. For its flight characteristics, it will...