Gilese 581 g is these days from Neptune -- a near neighbor by galactic standards . When a planet falls in the `` habitable zone '' Soon-to-be-published research says body is in `` habitable '' zone of its solar system . Scientists believe Gilese three to four g has a mass 581 times that of Earth . A habitable planet has to be a rocky planet large enough to hold an atmosphere .
Gilese 581 g is these days from Neptune -- a near neighbor by galactic standards . Soon-to-be-published research says body is in `` habitable '' zone of its solar system . Scientists believe Gilese three to four g has a mass 581 times that of Earth . A habitable planet has to be a rocky planet large enough to hold an atmosphere .