New York (CNN Business) SpaceX has finally launched its mission to resupply the International Space Station after a series of delays.

A Falcon 9 rocket, carrying an uncrewed Dragon 1 spacecraft stuffed will cargo, took of from Cape Canaveral, Florida on Saturday just before 3 a.m. ET.

This is usually a routine task for SpaceX. But the latest launch, originally scheduled for earlier this week, was plagued by unusual hangups on its path to the launch pad, including a rare electrical issue aboard the space station.

SpaceX's launch was rescheduled for a Friday morning as the ISS team solved its issues. But there was another setback, also involving electrical problems — this time for SpaceX. The company said in a tweet that its droneship, a seafaring platform used to land rocket boosters after flight so they can be reused and save SpaceX money, suffered an "electrical issue" and it forced the company to push launch back by another 24 hours.

After liftoff, the first-stage rocket booster — the largest piece of the launch vehicle that gives it the initial thrust — detached from the second-stage of the rocket and steered itself back to an upright landing on a seaborne platform, called a droneship.

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