Astronomers Are Finding Earth-Like Planets. Which Ones Might Harbor Alien Life?

Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.
Houston Chronicle

Earth-size stars and alien oceans – an astronomer explains the case for life around white dwarfs

(THE CONVERSATION) The Sun will someday die. This will happen when it runs out of hydrogen fuel in its core and can no longer produce energy through nuclear fusion as it does now. The death of the Sun ...