Earth's twin? NASA telescope discovers most Earth-like planet yet outside our solar system

  • Article by: ALICIA CHANG , Associated Press
  • Updated: April 17, 2014 - 5:34 PM

LOS ANGELES — Astronomers have discovered what they say is the most Earth-like planet yet detected — a distant, rocky world that's similar in size to our own and exists in the Goldilocks zone where it's not too hot and not too cold for life.

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