Is there another planet in the universe?

The astronomers spent years making sure the signals they detected really were from planets.

A second planet in the same system, Kepler-20e, is only slightly bigger  than Earth and even hotter.

Both worlds circle their parent star closely with 'years' that last just nine and sixteen days respectively.

Dr Francois Fressin, one of the astronomers from the Harvard-Smithsonian Centre for Astrophysics in Cambridge, US, said: ‘It is the first time humanity has been able to discover an object similar to the Earth around a star, so maybe we will be able to find others.

‘This could be an important milestone. I think 10 years or maybe even 100 years from now people will look back and ask when was the first Earth-sized planet found. It is very exciting.

source : http://bit.ly/vvTKSj