Secret U.S. Space Plane to Land

An unmanned U.S. Air Force Boeing X37-B took off from Cape Canaveral Air Force Station in Florida a year ago and is landing in California in late June, but what’s it been doing up there this whole time? The mission of the Boeing space plane— a jet resembling a mini space shuttle and the second of its kind to fly in space—has never been explained, though there are rumors that its mission was to spy on China’s new space station, Tiangong. The jet was supposed to land in California last December, but its flight was extended for unknown reasons.