Video: Delta 4 lifts off

SpaceX is readying a Falcon 9 rocket booster for launch Monday at Vandenberg Air Force Base, California, on a record-setting mission with 64 smallsats on-board that will also mark the launch provider’s first use of the same first stage for a third flight.

Presenting the results of an inquiry into a European Vega rocket failure last month, officials said Friday that misleading instructions and inadequate preflight checks caused teams to overlook wrongly-installed cables on the launcher’s upper stage steering system. Arianespace aims to resume Vega launches before the end of March.

Managers have pushed back the next flight of United Launch Alliance’s Delta 4-Heavy rocket from a launch pad in California until no sooner than early December, and the first launch of SpaceX’s Falcon Heavy for the U.S. Air Force has likely been delayed to some time early next year, officials said this week.