A rarely heard cannonade of sonic booms will reverberate across Florida's Space Coast on Tuesday, the result of a SpaceX Falcon 9 rocket launch and subsequent landing at Cape Canaveral Space Force Station. After a 2:56 p.m. liftoff, the rocket's 162-foot booster will flip around and begin an autonomous descent toward nearby Landing Zone 1 and touch down just five-and-a-half miles from where it started. Sonic booms are generated when an aircraft or rocket approaches the speed-of-sound barrier during acceleration or deceleration. It's possible that residents of Brevard, Orange, Osceola, Indian River, Seminole, Volusia, Polk, St. Lucie, and Okeechobee counties may hear one or more sonic booms during the landing, SpaceX said.