'Earth copies' can exist in the universe
Proxima b, the closest stone planet outside the solar system, is one of many places where life can exist due to many suitable conditions.There is no planet named Gliese 581g, 581d
One of the most potential candidates for Earth 2.0, Gliese 581g is just an illusion of the universe, while its companion Gliese 581d is not real either.Summary of hot news on April 1, 2015
The planet has life