LA UFO sets Twitter on fire with even Khloe Kardashian convinced it could be aliens (4)

Just a test: The blue-green spotlight, which could be seen as far as Utah and Nevada, was confirmed to be a Naval test fire off the coast.

UFO: Josh Groban also saw the light in the sky and wondered if it could be the beginning of an alien invasion.

They raised him up: Josh Groban says the light is in fact aliens and joked that they probed him.

The 'You raise me up' singer Josh Groban also couldn't help but look up at the glittering sky on Saturday night.

'California coast. DID. ANYONE. ELSE. JUST. SEE. THAT. #ufo,' Josh Groban tweeted.

Like Khloe, Groban isn't convinced that an alien invasion is not underway.

'A test fire of what?! That is some unknown top secret stuff right there. Plus, X factor in all this, I was probed,' joked the singer.

Despite the confirmation that the light was a navy missile, Darth Vader jumped to take credit for the light.

'The UFO seen over LA tonight was just the Death Star getting into position,' he tweeted.