The signals have been inexplicably traced back to a galaxy that has been dormant for billions of years.
Various space missions have sent signals into deep space and the earliest possible response time is fast approaching.
The signal had been sent as part of an exercise to see how we would fare if a genuine alien signal was ever picked up.
The latest search for evidence of alien life focused on looking for alien worlds that are sending messages to one another.
The Dutch Safety Board has signaled that it will be accepting reports of UAPs by aviation professionals.
Around one year ago, an unexplained signal was picked up on monitoring stations around the world.
Back in the 1970s, this iconic signal was thought to be a candidate for the first ever message from extraterrestrials.
Detecting underwater acoustic signals could provide scientists with new insights into plane crashes.
For years, a radio station broadcasting continuously out of Russia has managed to defy explanation.
The inventor and engineer picked up a mysterious signal in 1899 that he could not find an explanation for.
Astronomers have been attempting to understand the nature of a distant object known only as GPMJ1839-10.
Astronomers looking for signs of alien life are listening out for radio pulses originating from the center of the Milky Way.
A new study has aimed to determine whether Earth's radio and mobile tower signals could be picked up from other worlds.
A response to signals sent by some of our own spacecraft could reach Earth before the decade is out, scientists say.
The encouraging discovery could indicate the presence of a magnetic field and the potential for alien life.
The double telescopic study of this distant region of space aimed to listen out for any other interesting signals.
China's 'Sky Eye' telescope has picked up possible evidence of extraterrestrial intelligence.
Astronomers in Australia have discovered a strange radio source and nobody knows what it could be.
Astronomers are currently investigating a signal coming from the direction of our closest neighboring star system.
An amateur astronomer has pinpointed the most likely star system from which the signal may have originated.