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 ...

It’s called Gliese 581 g, and it’s about 20 light-years from Earth. If we got tired of living here, how would we get to Gliese 581 g? Laser sails are the most technically feasible option.

In April, a European team announced in Astronomy & Astrophysics the discovery of two new planets orbiting the M star Gliese 581 (a red dwarf), with masses of at least 5 and 8 Earth masses.

It's likely two to three times as massive as Earth and zips around its parent star, the red dwarf Gliese 581, every 30 days or so. [Gallery: The Strangest Alien Planets] This orbit places the ...

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 ...

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 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 ...

But Gliese 12 b, located 40 light-years away in the constellation Pisces, could be the most sensational find to date. Its discovery is outlined in a paper published today in Monthly Notices of the ...

The study, published in Monthly Notices of the Royal Astronomical Society on Thursday, named the new planet Gliese 12 b. Scientists said in the study that the planet is “the nearest, transiting ...