Researcher explains why we haven’t discovered aliens yet

Humans have never been contacted by aliens before. The search for radio signals from extraterrestrial civilizations remains unsuccessful to this day. According to the researcher, the prevailing explanation for this radio silence is divided Claudio Grimaldi the Polytechnic University of Lausanne (EPFL) in Switzerland into an optimistic and a pessimistic category.

The former assumes that people have not been adequate sensitive detectors used or simply missed or overlooked the signals. For example, we could have pointed our telescopes in the wrong direction.

The pessimistic explanation is that the absence of signals is evidence that it is simply no other intelligent life in our galaxy.

Earth is in a bubble

Grimaldi and his team has a different explanation. According to him, the earth could be in a Blase are located where no extraterrestrial signals have penetrated so far. Space is simply too big to scour it for these signals. So it’s possible that not enough extraterrestrial transmissions are crossing our path.

This statement is based on a statistical model. This was previously used to cut porous materials such as sponges, to investigate. In this case, it was used to assess the distribution of extraterrestrial beacons that might be in space. The pores in the sponges represent the regions in which there are no signals.

Detection could take a long time

The model assumes that at any point in time there is at least one source of electromagnetic engineering signals in the Milky Way and that Earth has been in a “silent” bubble for at least 6 decades.

If that’s the case, statistically there is somewhere in our galaxy at least 5 electromagnetic emissions per century – so extremely rare. In the optimistic scenario, we would have to do it again 60 years wait for one of these signals to reach us. In the pessimistic this could still 2,000 years last.

Don’t know which way to look

Even the largest telescopes and telescope systems in use today would only observe a relatively small section of the sky. According to Grimaldi, we really don’t know in which direction we are looking and which frequencies and wavelengths we have to pay attention to.

“We’ve only been looking for 60 years,” he says. And even in the next 60 years, the probability of success in detecting signals is statistically low. But he encourages us to remain patient.

The study was im Astronomical Journal published.