Live coverage: Falcon 9 rocket lifts off from California

The first two next-generation Iridium satellites, designed to connect global subscribers with data and voice traffic, arrived at Vandenberg Air Force Base on Tuesday, where they will join eight more message relay craft for launch in September on a SpaceX Falcon 9 rocket.

A commercial SpaceX Dragon cargo capsule packed with a robot assistant for the International Space Station’s crew, pouches of extra strong coffee, and a NASA science instrument designed to track the health of plants on Earth left Cape Canaveral aboard a Falcon 9 rocket Friday on a three-day pursuit of the orbiting research lab.

An Ariane 5 rocket journeyed from its assembly hangar to a nearby launch pad in French Guiana on Tuesday, a day before the heavy-duty launcher is scheduled for liftoff with the first in a new generation of high-capacity communications satellites for Intelsat.