Happy World UFO Day

PIERRE ANDRIEU/AFP/Getty Images

July 2 is World UFO Day and celebrated worldwide by UFO enthusiasts

Today, on July 2, UFO fans get together and celebrate the famous UFO crash in Roswell, New Mexico in 1947. WorldUFODay.Com says the yearly event is meant to raise awareness about sightings and to encourage the government to be more open about UFO incidents.

What is a UFO?

It is defined as an object that is seen in the sky but is no identifiable as a known object or natural phenomena. 

Photo: PIERRE ANDRIEU/AFP/Getty Images