How many alien worlds have been quantified?

Approximately 38000 civilizations

Are we, human beings, the only persons in the Universe?  This is a buzz question we often hear.  Believe it or not, specialists consider that intelligent civilizations are out there and there could even be thousands of them.  Researchers consider that there are at least 361 intelligent civilizations in our Galaxy and possibly as many as 38,000.  This is definitely something.  Keep in mind that more than 330 planets have been discovered outside our solar system in the past years.