Video: Russian cargo ship spinning

A faulty support strut inside the Falcon 9 rocket’s second stage liquid oxygen tank likely broke free during a June 28 space station resupply launch, destroying the booster minutes after liftoff in a cloud of debris over the Atlantic Ocean, SpaceX chief Elon Musk said Monday.

Lighting up the pre-dawn sky, a Soyuz rocket roared to life and streaked into orbit Tuesday carrying a Russian cosmonaut and two NASA astronauts to the International Space Station, boosting the lab’s crew back to six and the U.S. complement to four NASA-sponsored astronauts.

Two newly arrived space station astronauts, both veteran spacewalkers, suited up and ventured outside the lab complex Thursday to install additional wireless communications gear, to replace a balky camera and its pan-and-tilt mechanism and to remove two suspect hoses in the station’s ammonia coolant system.