From being the most Earth-like planet known to being consigned to the trash bin, the story of Gliese 581g is a precautionary tale for exoplanet hunters. When you purchase through links on our site ...

The recent discovery of Gliese 581g, an alien planet in the habitable zone of another star, has been an exciting development for scientists probing the galaxy for signs of extraterrestrial life.

"Gliese 229B was considered the poster-child brown dwarf, and now we know we were wrong all along about the nature of the object. It's not one but two." A well-studied cosmic object has stunned ...

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 ...

A brief overview of Gliese 12 b produced by SciNews. What makes Gliese 12 b particularly intriguing is its size and location. It is roughly the same size as Earth, suggesting it may have similar ...

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 ...

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.

“There are always discussions among scientists about the ways we interpret data but I’m confident that GJ 581d has been in orbit around (its star) Gliese 581 all along.” open image in ...

Forbes contributors publish independent expert analyses and insights. I cover aerospace, astronomy & hosted The Cosmic Controversy Podcast. This article is more than 8 years old. New data from the ...

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 ...