Live coverage: Falcon 9 disintegrates after launch

Watch as the launch of a Falcon 9 rocket on a space station resupply run is aborted 13 seconds before liftoff when ground controllers were alerted to a potential problem with the vehicle’s second stage steering system.

SpaceX launched a Falcon 9 rocket Sunday from Cape Canaveral with 143 small satellites, a record number of spacecraft on a single mission, giving a boost to startup space companies and stressing the U.S. military’s tracking network charged with sorting out the locations of all objects in orbit.

Watch a time-lapse video of the Falcon 9 rocket being lifted upright at launch complex 39A in readiness for another launch attempt on a commercial space station resupply mission.