Gliese 581 d / (often shortened to Gl 581 d or GJ 581 d) is a possible /extrasolar planet orbiting the star Gliese 581 approximately 20.4 light-years away in the constellation of Libra. It is the third planet claimed in the system and (assuming a six-planet model) the fifth in order from the star.
Though not confirmed to be a terrestrial planet and significantly more massive than Earth (at 6.98 Earth masses), the Super-Earth is the first exoplanet of terrestrial mass proposed to orbit within the habitable zone of its parent star.
Assuming its existence, computer climate simulations have confirmed the possibility of the existence of surface water and these factors combine to a relatively high measure of planetary habitability.
Gliese 581d in science FictionEdit
This location has appeared in a few works of science fiction, such as the Aliens versus Predator Universe (AVP).
In the Aliens versus PredatorEdit
Terraformed: 2046 - 2054 Established: 2054 Population: 4,420,000
Industry: Mining, Refining, Light and Heavy Manufacturing
Key resources: Diamond, Lead, Zinc, Nickel, Niobium