Are the alliens being the most plentiful?

The planets, like Earth and the living beings that inhabit it can be a infrequency. In the Milky Way, our galaxy, three out of four stars are red dwarfs like Trappist-1. So far, three solar systems with seven planets and a total of 10 habitable worlds have been discovered. The new finds breaks all records as it houses the largest number of terrestrial worlds and also contains three habitable, explains Ribas. 

Would be the life in newly discovered exoplanets

After the discovery of the new solar system around the star Trappist-1 you have to answer several questions to confirm if they harbor life and to know if someday humans will be able to analyze it. While some of these unknowns could be solved in a few years, others require technologies that may not be available for centuries.