Star Next Door May Host Superhabitable' World

Earth may be our home, but another planet even cosier for life could be orbiting the star next door. A detailed analysis of what might make planets suitable for life says that  Alpha Centaura B, the star closest to our sun, would be the perfect star to host a "superhabitable" planet – a world of islands, shallow seas and gentle slopes, where the conditions needed to support a diverse array of life forms would persist for up to 10 billion years.