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. 

The exoplanet "closest" to the Earth

The Kepler space mission has exposed the exoplanet, closet to the Earthlike identified so far. Dub Kepler 10b, the planet is unstable (solid) smaller than those found, since the diameter is the same to just 1.4 times the Earth, while its mass is 4.6 times that of Earth.

In attendance can be no illusions, however, about the possibility of life existing in it, because although Kepler 10b orbits a star (Kepler 10) very similar to our Sun, its distance to it is twenty times less than separating the sun Mercury.