Sonic booms heard in Florida caused by secret spaceplane returning to EarthORLANDO, Fla. - Florida residents lit up social media on Saturday after hearing the sound of sonic booms and not knowing what caused them."Glad to know I wasn't going through a break-in this morning in the 5 o'clock hour here in Orlando, Florida because...dang, what a startling rumble that was," said one person on Twitter.The X-37B spaceplane returned to Earth, landing on the old space shuttle runway at NASA’s Kennedy Space Center Shuttle Landing Facility on Nov. 12, 2022, at 05:22 a.m., completing its sixth mission.The Merritt Island National Wildlife Refuge was closed early Saturday due to operations at NASA's Kennedy Space Center, including roads leading into the refuge which neighbors Kennedy Space Center.MORE NEWS: SpaceX successfully launches more Intelsat satellites from FloridaAccording to Boeing, X-37B was originally designed to fly 270 days each mission, but with each flight, the spacecraft has set new records for time in orbit."