A mysterious military "space plane" returned to Earth on Sunday after a more than 700-day mission, announcing its arrival with a window-rattling sonic boom heard over a large swatch of central Florida.
Not much is known about the classified, unmanned Air Force plane, why it was sent to space, or what it might have taken with it. Lt. Col. Ron Fehlen, who is the program manager for the experimental X-37B aircraft, said the mission was a success and that the team is "excited about the data gathered to support the scientific and space communities,'' WMFE reports.
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Watch the X-37B land on a shuttle runway at NASA's Kennedy Space Center below. Jeva Lange
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