Engineers called a hold in order to take a closer look , '' said John Taylor , of SpaceX communications . Problem is with a thrust vector actuator on the first stage , SpaceX says . SpaceX 's scheduled launch Friday is aborted ; next possible attempt is Tuesday . In a first , the company plans to try to land the rocket 's second stage .
Problem is with a thrust vector actuator on the first stage , SpaceX says . SpaceX 's scheduled launch Friday is aborted ; next possible attempt is Tuesday . In a first , the company plans to try to land the rocket 's second stage .