LAS VEGAS, NEVADA - SEPTEMBER 19: Revelers dance during the Area 51 Celebration at the Downtown Las Vegas Events Center on September 19, 2019 in Las Vegas, Nevada. The event is one of several in Nevada being held as a result of a Facebook event entitled, "Storm Area 51, They Can't Stop All of Us," suggesting people storm the highly classified U.S. Air Force facility at the Nevada Test and Training Range to address a conspiracy theory that the U.S. government is conducting tests with space aliens, went viral. Matty Roberts said he created the event as a joke. (Photo by Ethan Miller/Getty Images)

Alien Stock took place Thursday night at the Downtown Las Vegas Events Center. It was the first in a weekend events surrounding the “Storm Area 51” movement which also includes Alien Stock and Alien fest in Hike, NV and Rachel, NV.