Proxima b, the closest stone planet outside the solar system, is one of many places where life can exist due to many suitable conditions.
Proxima b is 4.2 light years from Earth and lies in an area that allows liquid water to exist on the surface.
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The Gliese 667 c system consists of at least one and possibly three super-Earths in the region that inhabit the star.
Kepler 186 f is 1.5 times larger than Earth, 561 light years from Earth.
The Kepler 442 b is 1115 light-years from Earth, it flies around an orange dwarf with a life of at least 30 billion years.
