It was large, spherical, luminous and hovering over Empire Bay. Drew Ryan had no idea what it was.

Mr Ryan is a hobby photographer, and managed to snap has numerous images and extensive video footage which he says back up his UFO claim.

"I have seen many unexplained things in the Central Coast skies, but most recently, on Tuesday night I observed and photographed a large luminous ball shaped object over Empire Bay,” Mr Ryan said.

"The ball changed colour several times until it went orange, and then it moved slowly across the sky to hover over Woy Woy for some time.’’

Strangely enough, the day of the sighting was World UFO Day.

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