In what’s being hailed as one of the biggest astronomical discoveries of the century, scientists with the European Southern Observatory (ESO) today confirmed the discovery of an Earth-like exoplanet in the habitable zone of Proxima Centauri-our nearest neighboring star. Details of the team’s discovery were just published in Nature.
Rumors of a possible Earth-like exoplanet first surfaced on August 12 in the German weekly Der Spiegel. Citing an anonymous source with the La Silla Observatory research team, the magazine claimed the rumored planet “is believed to be Earth-like and orbits at a distance to Proxima Centauri that could allow it to have liquid water on its surface-an important requirement for the emergence of life.”
Now we know those rumors were true: There is clear evidence for a planet orbiting Proxima Centauri, a small red dwarf star located just 4.25 light years away, slightly closer to Earth than the famous binary pair of Alpha Centauri A and B. It’s been dubbed Proxima b, and the ESO team pegs its mass as being roughly 1.3 times that of Earth.
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