SpaceX is launching its last mission of 2017 later today, having a planned launch window of 5:27 PM PST (8:27 PM EST). The mission is perfect for client Iridium, and can send a 4th group of 10 satellites into low Earth orbit for Iridium&rsquos NEXT constellation, that will eventually contain 75 satellites launched by SpaceX as a whole.

SpaceX is launching the Falcon 9 for Iridium-4 from California&rsquos Vandenberg Air Pressure Base, where it’s its Space Launch Complex 4E. It&rsquoll function as the 18th launch of the Falcon 9 for SpaceX this season &ndash however it won&rsquot incorporate a recover work for balance the very first stage, because the launch needs include configuring the Falcon 9 was once expended throughout the launch process.

The Falcon 9 first stage booster getting used for that mission has been utilized before, however &ndash it had been traveled during Iridium-2, the 2nd mission that Spacex travelled with this client, which required devote June. Which means this rocket was switched around and prepared for re-use within just six several weeks.

SpaceX launched an Worldwide Space Station resupply mission just a week ago, using both a reflown Dragon capsule along with a reflown Falcon 9 first stage. It&rsquos also get yourself ready for its first Falcon Heavy launch, that ought to occur at the start of 2018.

When the mission today is scrubbed unconditionally, SpaceX includes a backup launch window on Saturday, at 5:21 PM PST.

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