Is Kepler-186f The One? At 490 light-years away, we may never know:
“This is the first definitive Earth-sized planet found in the habitable zone around another star,” said Elisa Quintana of the Search for Extraterrestrial Intelligence (SETI) Institute at NASA. “Finding such planets is a primary goal of the Kepler space telescope.”…
…Kepler had observed five planets approximately the size of Earth and in the habitable zone.
But the “previously discovered worlds are larger than Earth, and consequently their true nature — rocky or gaseous — is unknown,” the SETI Institute said in a written announcement on Thursday. “On the basis of the observed dimming of starlight from Kepler-186, the authors estimate that this newly discovered planet is roughly the same size as the Earth.”
Theoretical models and observations tell scientists that planets the size of Kepler-186f likely have a composition of iron, rock and ice, like Earth, Quintana told reporters Thursday.
And speaking of resemblances, doesn’t this newscaster look quite a bit like Candice Bergen in her more mature years?