On November 3, thousands of people in Victoria, Australia witnessed a giant anomaly in the sky. Many have speculated it was actually an enormous UFO hiding behind a cloud formation and the news quickly spread.
A similar case happened in 1957 when a US soldier saw a metal ring in the sky and as he reached for a camera the UFO cloaked itself in a cloud of smoke. More recently, in 2006 a grey disk was spotted over the O’Hare Airport in Chicago. The flying object then shot upwards and passed through a cloud, leaving a similar looking hole in it.
Meteorologists say the structure is due to below-freezing temperatures inside the cloud.