Alien technology could have crashed into the Pacific Ocean.
Harvard Professor Avi Loeb is convinced that a spacecraft plunged into the sea off Manus Island in Papua New Guinea.
A US Space Command report says it was a meteor but Loeb is adamant that the object has been built by extraterrestrials.
The physicist wrote: "Our discovery of an interstellar meteor heralds a new research frontier.
"The fundamental question is whether any interstellar meteor might indicate a composition that is unambiguously artificial in origin."
Loeb is aiming to use "magnets" to retrieve the equipment in a bid to prove his theory.
He explained: "My dream is to press some buttons on a functional piece of equipment that was manufactured outside of Earth.
"This gives a whole new meaning to a 'fishing expedition' - in this case, one involving extraterrestrial equipment."