The June 29, 2018 launch of a SpaceX Falcon 9 rocket from Cape Canaveral Air Force Station was scheduled for 5:42:42 AM in order to rendezvous with the International Space Station. Every rocket has a plume of exhaust, but only the rockets launching just before sunrise will show up like this one. Once the rocket reaches a certain altitude, the Sun below the horizon will light up the exhaust. (It is the same effect that causes noctilucent clouds). This photo is a composite of a 235-second streak shot at f/22 and then a 4-second shot of the plume. This plume was visible across Florida.