Three unidentified objects have now been downed by fighter jets over North America and we still don't know what they are.
The popular astrophysicist is certainly no fan of the term 'unidentified aerial phenomena' or the idea of alien visitation.
A man claiming to be from the future has already amassed over one billion views on video sharing site TikTok.
The UK public have picked the Terminator himself - Arnold Schwarzenegger - to protect them from aliens.
There are distinct similarities between the coronavirus pandemic and a potential extraterrestrial threat.
A recent NASA rocket launch produced a strange and rather spectacular light show in the skies over Norway.
Volunteers are lining up to take part in an alien invasion prank made up of drones disguised as UFOs.
It has been three quarters of a century since Orson Welles' infamous broadcast about an alien invasion.
A radio station got more than it bargained for when a promotional invasion spoof got out of control.
Rumours and conspiracy theories are abound in the run up to the London 2012 Olympic Games.
Stephen Hawking has said that any attempt to contact extraterrestrial life could be dangerous.
Newly released UFO files recount a hoax that sparked fears of a real life alien invasion in the 1960s.