PARIS— A European Vega light-lift rocket carrying 53 small satellites, repeatedly delayed since mid-June by adverse high-altitude winds around the spaceport, has been rescheduled for Aug. 17 for the same reason, launch-service provider Arianespace said.

The launch of Vega will be heading north from Europe’s Guiana Space Center, on the northeast coast of South America, a route that carries it over populated areas.

In the event the rocket had to be destroyed, winds could carry debris to where they would . . .

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