Kepler telescope spies ‘most Earth-like’ worlds to date
The search for a far-off twin of Earth has turned up two of the most intriguing candidates yet.
Scientists say these new worlds are the right size and distance from their parent star, so that you might expect to find liquid water on their surface.
It is impossible to know for sure. Being 1,200 light-years away, they are beyond detailed inspection by current telescope technology.
But researchers tell Science magazine, they are an exciting discovery.