*UPDATE (from livescience)* This afternoon officials from the Milestone School in Mount Vernon identified the “UFOs” as some of the helium balloons that escaped from an engagement party held for a teacher at the school shortly before the sightings. The wind direction at the time would reportedly have taken the balloons to within sight of people in Manhattan’s Chelsea area. The article below remains as it was originally written.

A fleet of “UFOs” were sighted above New York City on October 13th. What were they?

The unlikeliest answer would have to be extra-terrestrial space craft. It’s strange that people would automatically assume this, but comments about alien visitors are spilling out of forums and comments sections all over the web.

Occam’s Razor says that the simplest explanation is probably the most correct. So, if it’s not ET flying over New York City, what could it be? Well, the guys in this video seem to have it figured out…

Balloons??? How could people possibly confuse alien space craft and balloons? We tend to see what we want to see, and let our imagination fill in the blanks. Once news of UFOs started spreading from one person to the next, confirmation bias kicked in and believers began to imagine the “mother ship” approaching the city.

But check this out… on the same day that balloon-like UFOs were spotted over NYC, there was a ceremony to celebrate the centennial of the construction of Madrid’s “Gran Via” avenue. During the ceremony, a fleet of yellow balloons were released into the midtown skyline.

I’m not saying that this definitely explains the NYC UFO mystery, but it would be an amazing coincidence if balloon-like space ships were spotted above NYC on the same day that a mass of balloons were released in the same city.