Gliese 581 is a red dwarf star about 20 light-years from Earth. Starting in 2005, astronomers at the European Southern Observatory (ESO), using the High Accuracy Radial velocity Planet Searcher ...

The announcement Wednesday (Sept. 29) of two newfound alien planets circling the star Gliese 581 adds to the nearby solar system's intrigue, further cementing its status as a top candidate to ...

Last time we wrote about the possibly-habitable exoplanets orbiting red dwarf star Gliese 581 was back when we were possibly lie in the habitable zone. 581c lies in a questionably-habitable spot ...

The planet Gliese 581d is at the colder outer edge of the "Goldilocks zone" in which liquid water can be sustained. Now a study in Astrophysical Journal Letters, external suggests its atmosphere ...

The planet orbits a so-called cool red dwarf star called Gliese 12, according to NASA. Gliese 12 is only about 27% of the sun’s size, with about 60% of the sun’s surface temperature ...

Exoplanet Gliese 12 b is slightly smaller than Earth–about the size of our sister planet Venus–and has a fairly temperate surface temperature for an exoplanet. The intriguing new exoplanet is ...

The planet, which orbits the star Gliese 12 in the constellation Pisces, was first spotted by astronomers using the Transiting Exoplanet Survey Satellite, a NASA space telescope. “It was ...