"Three, two, one, ignition, liftoff of Falcon 9", Iridium CEO Matt Desch said on a live webcast as the white Falcon 9 rocket took flight from Vandenberg Air Force Base in California at 7:31 am (1531 GMT).
A SpaceX Falcon 9 rocket carrying 10 Iridium Communications satellites has blasted off from California.
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There are a whole lot of new machines in orbit now that SpaceX has completed a series of eight launches to upgrade communications company Iridium's constellation of satellites. The rocket carried the last batch of 10 NEXT satellites, which brought the total in orbit up to 75 after a successful deployment.
Iridium is deorbiting its original fleet of satellites.
The next launch window was tentatively planned for January 8, and eventually pushed to Friday.
To watch the launch, check out www.spacex.com/webcast approximately a half hour before the expected launch.
The Falcon 9 launch pad can be seen from several vantage points around the Lompoc Valley, including at the intersection of Moonglow and Stardust roads plus the peak of Harris Grade Road. This marks the second playlist with Iridium's seventh launch including songs "in theme" to match countdown milestones or to serve as a tribute.