A rocky alien planet called Gliese 581d may be the first known world beyond Earth capable of supporting life as we know it, a new study suggests. Astronomers performing a new atmospheric-modeling ...

The planetary system around the red dwarf Gliese 581, one of the closest stars to the Sun in the galaxy, has been the subject of several studies aiming to detect the first potentially habitable ...

When it was first discovered in 2007, Gliese 581d was thought to be just outside its star's habitable zone, but later, scientists discovered that Gliese 581d is just close in enough to potentially ...

A planet orbiting a star 20 light-years from Earth could have the right conditions for sustaining life. Simulations carried out by a team of scientists in France suggest that the planet, called Gliese ...

If–as seems ever more likely–we render this planet uninhabitable, we now have a prospective new home. Scientists have found a planet that is the best candidate yet to be Earth-like and capable of ...

More than 10 years after the discovery of the first extrasolar planet, astronomers have now discovered more than 250 of these planets. Until a few years ago, most of the newly discovered exoplanets ...

An artist's rendition of Gliese 581g from 2010. Unfortunately the artist put a planet where there isn't one. Lynette Cook / NASA Since the first planet outside of our solar system was discovered in ...

A rocky alien planet called Gliese 581d may be the first known world beyond Earth capable of supporting life as we know it, a new study suggests. Astronomers performing a new atmospheric-modeling ...

In April, a European team of astronomers announced the discovery of two possibly habitable Earth-like planets. Two new detailed studies of this system confirm that one of the planets might indeed be ...