An Ariane 5 rocket took off on a rare morning launch Thursday with four Galileo navigation satellites, the heavy-lifter’s first flight in support of the European positioning and timing fleet. Liftoff from French Guiana occurred at 1306 GMT (8:06 a.m. EST).

Officials will likely set a new launch date Thursday for a SpaceX-owned commercial cargo craft that was expected to take off Friday heading for the International Space Station, according to sources familiar with launch preparations.

A SpaceX Falcon 9 rocket carrying a Dragon cargo ship loaded with more than 4,000 pounds of supplies and equipment bound for the International Space Station — including a critical docking adapter needed by future U.S. crew ships — broke apart in a shower of debris shortly after launch Sunday.