Mayor of LA Eric Garcetti, tweeted these pictures of the launch of the SpaceX Falcon9 Rocket as it launches into space on the 7th of October 2018.
See the screenshots below.
The caption:
Nope, definitely not aliens.
What you’re looking at is the first launch and landing of the @SpaceX Falcon 9 rocket on the West Coast. The rocket took off from Vandenberg Air Force Base at 7:21 p.m. and landed safely back on Earth. 
