It may take 400K years to link with alien civilization, scientists claim [TKB Science]

As a single intelligent civilization, man has always wanted to know about the existence of other intelligent civilizations (CETIs). Scientists have been trying for years to contact aliens. A report has been published in The Astrophysical Journal. In this, researchers Wenjie Song and He Gao of Beijing’s Normal University have estimated communication according to the number of other intelligent civilizations (Communicating Extraterrestrial Intelligent Civilizations (CETIs).

The two researchers created nine scenarios where CETIs were either rare or common. If CETIs are rare, i.e. on the order of 110 throughout the Milky Way, then one communicating civilization would have to wait 400K years before receiving a signal from another. If the conditions were very good, it would take at least 2,000 years for a communicative civilization to receive the first message.

Researchers say that the reason we do not get the signal may be that the life span of humans is short according to the time to communicate. Even if the Doomsday logic is accepted as true, humans may not get any signal from the rest of the CETIs until the end of it.

Researchers say that if someone were to find us, they would have to be in a very small region of the Milky Way for signs of Earth. Although the team believes that there are a lot of uncertainties in these possibilities, so there may be a chance to communicate with aliens soon.

Researchers say that it is not certain how many terrestrial planets can generate life and what is the process of life in CETIs. Also, it is uncertain whether they are capable of sending signals. But there could be another uncertainty as well. That is, there may be very few CETIs out there and who knows if they even want to talk to us or not.