Scientists say nearby star Gliese 581 hosts a planet within the “habitable zone,” meaning someday, when we finally make Earth un-inhabitable, we’ll have a place to escape to. But long before that, ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Don't pack your bags just yet for Gliese 581 ...

Recently, a planet called Gliese 581 was discovered. Many reports assert this planet is in the "Goldilocks" zone -- not too close and not too far away from its star, which allows liquid water to exist ...