Is it a bird? Is it a plane? Or is it something altogether untoward?
Perhaps it was Santa as he began his jounrey delivering his presents to millions of children for Christmas?
But whatever it was, Los Angeles was in uproar over the sighting of what some thought was a UFO flying through the night sky.
Twitter was at a loss to describe what the mystery image was that people spotted whizzing above the City of Angels last night.
Traffic was brought to a standstill just days before Christmas as people carried out the last of their festive shopping.
More than 100 people rang police as people feared an alien invasion.
One Twitter user wrote: ‘Seriously, what is this I just saw in the sky above LA? Crazy!’
While another said: ‘#losangeles WHAT IS GOING ON IN THE SKY??? #ufo’
Meanwhile billionaire entrapaneur Elon Musk added: ‘Nuclear alien UFO from North Korea.’
But people were not left scratching their heads for too long because the mystery was soon solved.
SpaceX, the space exploration programme funded by Mr Musk, launched their Falcon9 rocket from Vandenberg Air Force Base at around 5.30pm local time.
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