The first—and so far only—hint of the potential planet arrived in observations from NASA’s now retired Kepler space telescope ...

With an orbital period around one year, much like Earth's 13-hour transit duration, HD 137010 b tantalises as Earth 2.0.

Earth is the only life-supporting planet in our Solar System. Until now. Today, we’re bringing Kepler 22-b into our planetary neighborhood. Where would this planet need to orbit within the Sun’s ...