closest habitable planet to earth?
In 1964 Stephen H. Dole estimated the number of habitable planets in our galaxy to be about 600 ... Orbital eccentricity is the difference between a planet's farthest and closest approach to its parent star divided by the sum of said ... They suggest that Earth-like planets may be very ... - read more
Astronomers said they have discovered a habitable planet orbiting Tau Ceti, one of the closest stars to Earth. Tau Ceti, which is less than 12 light-years from Earth, has five planets orbiting it. BBC reported that the planet lies in the solar system's habitable zone, or "Goldilocks zone." The - read more
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