What if there are no extraterrestrials

Extraterrestrial lifeStill no Aliens sighted? Maybe easy just Bad luck!

It is far from unlikely that there is other life somewhere in space. Then why haven't we found it yet - or us? So far we have probably just been in the wrong place at the wrong time, explains astrophysicist Michael Büker.

The universe is huge, there are an infinite number of stars and planets - it is therefore not unlikely that there are extraterrestrial civilizations elsewhere in the Milky Way. The astrophysicist Michael Büker also firmly assumes this.

"As a physicist, I think it's almost impossible that the earth should be the only place where life has ever evolved."
Michael Büker, astrophysicist

Just meeting them is a problem. On the one hand, according to Michael Büker, it is assumed that physics dictates that various processes simply take a long time.

Let's take the example of traveling the galaxy: Since it can be assumed that the speed of light is an absolute limit, it takes a long time - if you can at all - to fly from one corner of our Milky Way to another, for example.

So the chance that the others are just somewhere else is damned high. In addition, according to a new declaration, we live here on our earth really remote.

No tracks ≠ no aliens

It is also possible that our planet has long been visited in the past. That we haven't found any traces of it doesn't mean anything. Even if that had happened and even if visitors wanted to leave traces, it would not be so easy, says the astrophysicist. Finally, we find few and fragmentary traces of the dinosaurs that have populated the earth in large numbers over millions of years.

And something else is worth considering: Michael Büker recalls a consideration by the physicist Frank Drake, who tried in the 1970s to mathematically solve the question of life in space.

Civilizations have a finite lifespan

His formula also includes the thought that civilizations may only have a limited lifespan. So once there is life, it doesn’t mean that it will stay forever. So it is quite possible that humans and aliens have unfortunately just always missed each other.

"In view of the climate crisis, for example, we see today that we as a civilization are not necessarily very good at refraining from everything that could endanger our own existence."
Michael Büker, astrophysicist

If we want to calculate where and when we can best meet other lives, then we have to separate these two questions, says Michael:

  • The right one place Finding it is not that difficult - be it with telescopes or other investigation methods with which we look at the universe. We are finding more and more planets that would be suitable for life to arise there.
  • About the time however, we neither have an overview nor can we manipulate them. So we have no choice but to wait and survive as humanity as long as possible.

Maybe then we will find out: We are not alone!