In 1966, over 300 children and staff from a Melbourne school reportedly witnessed multiple UFOs silently flying through the sky before landing in a nearby field.
It is the largest mass UFO sighting in Australia, yet hardly anything was reported on it at the time.
Over the years, there have been differing reports about the details of what happened on April 6 at Westall High School, such as people claiming there were three saucerlike objects, while some thought there was just one.
In the 52 years since, there has been wide speculation about what people saw, with some believing it was an alien encounter and others pointing the finger at the government testing new technology.
Throughout all the years of speculation, however, one particularly interesting piece of audio has been greatly overlooked.
An American physicist known for his research into UFOs, Dr. James E. McDonald, conducted an interview with a science teacher from the Westall school, Andrew Greenwood, who witnessed the event.