Photos: A look at NASA's discovery of Earth 2.0

Planet Kepler-452b

An artist's concept of Kepler-452b, the first "near-Earth-size world to be found in the habitable zone of star that is similar to our sun," according to NASA. Scientists are not sure if the planet is habitable or not.

Image: NASA

By Lyndsey Gilpin

Lyndsey Gilpin is a former Staff Writer for TechRepublic, covering sustainability and entrepreneurship. She's co-author of the book Follow the Geeks.