Astronomers find first habitable Earth-like planet

“We have estimated that the mean temperature of this super-Earth lies between 0 and 40 degrees Celsius, and water would thus be liquid,” explained Stéphane Udry, from the Geneva Observatory (Switzerland) and lead-author of the paper reporting the result. “Moreover, its radius should be only 1.5 times the Earth’s radius, and models predict that the planet should be either rocky — like our Earth — or covered with oceans,” he added.
Astronomers find first habitable Earth-like planet (Earth & Sky)