How the US Air Force’s secret spaceplane disappears
WITH ITS bullet shape and stubby wings, the US Air Force’s X-37B Orbital Test Vehicle looks like the little brother of NASA’s classic Space Shuttle orbiter. But the comparisons end there: The X-37B is built to spend months and even years in orbit, carrying out classified missions for America’s military space programme.
In the 1990s, NASA needed a cheaper option to boost spaceplane readiness. The Space
