The latest planetary discoveries by the Kepler satellite bring us "a bit closer" to finding a planet similar to Earth, says NASA's John Grunsfeld:
The Kepler spacecraft has certainly turned out to be a rock star of science.
The discovery of these rocky planets in the habitable zone brings us a bit closer to finding a place like home.
It is only a matter of time before we know if the galaxy is home to a multitude of planets like Earth, or if we are a rarity.
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South Korean officials said the hotline would help facilitate dialogue and reduce misunderstanding during times of tension.
The Gunners boss has announced he will step down at the end of the season.