Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.
Live Science on MSN
Scientists study 100 possible alien radio signals from collapsed Arecibo Observatory, ending groundbreaking 21-year search
A crowd-sourced search for alien intelligence called SETI@Home is in its final stages, analyzing 100 radio signals of ...
Parade on MSN
The 22 Greatest 'Star Trek' Episodes of All Time
From Borg battles to impossible moral choices, these are the 'Star Trek' episodes that define the hit sci-fi franchise.
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