Calculate the Number of Alien Civilizations in the Milky Way

In this website you can calculate the number of alien civilizations in the Milky Way Galaxy.

The Omnicalculator compares two methods which attempt to estimate how many alien civilizations there could be in the Milky Way.

Try comparing the two models and see how their results differ, then experiment by changing their values. How many ETs are really out there?

The Astrobiological Copernican Principle model says that there may be 36 advanced alien civilizations out there in the Milky Way (with a large uncertainty).

“If they are spread out evenly across the Milky Way, our nearest neighbor would be 17,000 light years away. Our space travel calculator can help plan your trip!”


Frank Drake, an astronomer, astrophysicist, and founder of modern SETI – Search for ExtraTerrestrial Intelligence (scientific searches looking for signs of transmission from civilizations on other planets), created the Drake equation.

The Drake equation allows us to find the number of detectable civilizations in space, N, and has the following form:
N = R* * fp * ne * fl * fs * ft * L

Above: An artist’s impression of the Milky Way as seen from the outside.  Credit NASA/JPL-Caltech/ESO/R. Hurt.

source Omnicalculator