The mystery of a fireball crossing the Tasmanian skyline has been solved, but not before Facebook users declared alien life had finally made it to Tasmania.

The federal government's air navigation services provider Airservices Australia confirmed the object captured on hundreds of mobile phones and cameras across southern Tasmania early on Tuesday morning was nothing more than an aircraft "as it passed over Australian airspace".

"Aircraft?" Huh? To read more and view the video, click here.