Scientists discover a second earth, and it may contain extra-terrestrial life (Video)
February 15, 2015
BY: DANIEL KORN
About 500 light years away from Earth, within the constellation Cygnus, is a planet with the catchy name of Kepler-186f. This planet is about the size of Earth and completes its orbit around a red dwarf star—half the size and mass of our own sun—every 130 days.
More importantly, it’s the first planet ever discovered that falls within the “Goldilocks” zone, meaning that it’s just the right distance away from its orbited star that water on its surface should be in liquid form, if the planet is rocky as astrobiologists suspect. There have been other planets in the same hospitable zone, but they’re all “at least 40 per cent larger in size than Earth,” says NASA, which makes their geography difficult to study and understand.
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