Astronomers in Europe have discovered the first-ever planet with a mass similar to Earth and orbiting a star like the Sun. And, in galactic terms, it's right next door. The unnamed planet is in the Alpha Centauri star system, the nearest system to Earth, according to the European Southern Observatory (ESO). "This result represents a major step towards the detection of a twin Earth in the immediate vicinity of the Sun. We live in exciting times!" said Xavier Dumusque of the Geneva ...
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