Share on Facebook Share on Twitter Share on Google+ Share on Reddit Share on Pinterest Share on Linkedin Share on Tumblr 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. It was a talk of every account that belonged to particular region as it has gained a lot of hype. SpaceX founder and CEO Elon Musk responded to the reactions, tweeting a video of the rocket in the sky with the joking caption, “Nuclear alien UFO from North Korea.” The complex structure was earlier used by Atlas and Titan rockets between 1963 and 2005. It consisted of two launch pads, SLC-4W and SLC-4E, which were formerly designated PALC2-3 and PALC2-4 correspondingly. Both pads were built for use by Atlas-Agena rockets but were later rebuilt to handle Titan rockets. The designation SLC-4 was applied at the time of the conversion to launch Titans. Both pads at Space Launch Complex 4 are currently leased by SpaceX. SLC-4E is leased as a launch site for the Falcon 9 rocket, which first flew from Vandenberg on 29 September 2013, following a 24-month refurbishment program which had started in early 2011. SpaceX began a five-year lease of Launch Complex 4 West in February 2015 in order to use that area as a landing pad to bring back VTVL Return-To-Launch-Site (RTLS) first-stage boosters of the reusable Falcon 9 and Falcon Heavy launch vehicles. It is now to see how the SpaceX planning moves to the future.