SpaceX Launch Prompts Wonder, Alien Speculation

Screengrab/SpaceX

SpaceX launched Falcon 9 from the Vandenberg air Force Base in Vandenberg AFB, California, and prompted some confusion on Twitter.

On Saturday night Southern Californians responded to the launch of SpaceX's Rocket 9 with wonder, confusion and some speculation over aliens.

SpaceX launched Falcon 9 from the Vandenberg air Force Base in Vandenberg AFB, California. The launch was planned for 5:27 p.m. PT, according to TechCrunch. The goal of the mission was to send 10 satellites into low Earth orbit for satellite communications company Iridium Satellite Communications. The launch is SpaceX's 18th this year. 

At first some Twitter users were concerned that the sight was extraterrestrials, but by 5:50 p.m. #SpaceX was trending on Twitter.

SpaceX founder and CEO Elon Musk responded to the reactions, tweeting video of the rocket in the sky with the joking caption "Nuclear alien UFO from North Korea."

View some of the images taken by social media users below.