BBC NEWS | Science/Nature | New 'super-Earth' found in space

BBC NEWS Science/Nature New 'super-Earth' found in space: "Astronomers have found the most Earth-like planet outside our Solar System to date, a world which could have water running on its surface.
The planet orbits the faint star Gliese 581, which is 20.5 light-years away in the constellation Libra. "