A YouGov poll published in September 2015 found more than 56 percent of polled Germans believed in the existence of alien life.
But Germany has “no plans or protocol” if alien visitors ever attempt to contact the human race.
In response to questions submitted to the government, the German Ministry of Economics said it considered such an event “extremely unlikely according to current scientific knowledge”.
The Government said in a statement on the matter: “Concrete cases that could have been subject of bilateral or multilateral talks with other states are not known.”
What would happen if UFOs tried to contact Earth?
There is very little in terms of official legislation on how the Earth should collectively react but there are some guidelines set in place by scientific institutions
The International Academy of Astronautics (IAA) stipulates anyone who encounters extraterrestrial signals has to immediately broadcast them to the rest of the world.
The Post-Detection Task Group, a branch of the Search for Extraterrestrial Intelligence (SETI), similarly says international governments would have to pool resources together to beam back a joint message.
The USA also appears to be greatly prepared for the threat of space-based attacks with an entire unit of the United States Air Force assigned to combating space-cable adversaries.
The 527th Space Aggressor Squadron (527 SAS), stationed at Nellis Air Force Base, Nevada, is the first line of defence against space-based threats.
The 527 SAS regularly conducts drills and develops techniques to better prepare for attacks from above.
Captain Dustyn Carroll, aggressor training flight commander, said: “We replicate adversary tactics.
“We want to know what our adversaries are capable of, study that and see how we can apply that.
“We then teach joint and coalition forces what adversaries may or may not do, and then we go out and replicate it ourselves.”
An August 2017 survey conducted by film studio 20th Century Fox found nearly half of all Americans believe in aliens.
Almost as many were certain aliens are visiting Earth on a regular basis but less than 20 percent found stories of alien abductions genuine.
Even less claimed to have ever seen a UFO.
Most scientists today assume first contact with extraterrestrials would be achieved through a clear signal beamed to Earth and not by intercepting alien spacecraft.
Seth Shostak of the SETI Institute said: “It would take a while to verify, and then people who like to think about these matters say you would have a press conference and announce this to the world.”
Alien visitors capable of reaching Earth would likely have the technology to do how they please with the planet.
Mr Shostak said he would evacuate from the city as soon as the first UFOs appeared in the skies.
But a report published by the American Association for the Advancement of Science this year found people across the board would react positively to alien visitors.
Report author Michael Varnum, Arizona State University, said based on a mix of media headlines and surveys, the overall public response was optimistic.
He said: “To be honest, I wasn’t at all sure what we would find.
“It is worth noting that in fiction, often the discovery of extraterrestrial life is portrayed as having negative societal psychological consequences.”