A planet with the same mass as Earth has been discovered in our closest star system, Alpha Centauri, only four light years away.
Source: http://www.cosmosmagazine.com/news/6070/earth-mass-planet-found-star-next-door
A planet with the same mass as Earth has been discovered in our closest star system, Alpha Centauri, only four light years away.
Source: http://www.cosmosmagazine.com/news/6070/earth-mass-planet-found-star-next-door
