Gliese 581 IS the system, D is the planet.
Gliese 581d was discovered by a team of astronomers led by Stéphane Udry of the Geneva Observatory
No, Gliese 581 is another solar system that is around 20.3 lightyears from earth. Quite close in local star distances, but many times further away than the edge of our own solar system.
The Gliese 581 star system is not within our Solar System. It is located about 20 light years from us.
Libra
Gliese is a large telescope. It has been used to find several new systems, most notable Gliese 581.
Yes there is, its name is Gleise 581 e. Description:>>>A distant world known as Gliese 581e (foreground in this artist's conception) is the lightest planet outside our solar system found to date, astronomers announced in April 2009. The planet, one of four orbiting a red dwarf star, is just less than twice the mass of Earth. Astronomers also announced that one of the system's other planets, Gliese 581d, is an Earthlike world that orbits in the right zone to host liquid water, and thus potentially life
theoretically yeah 'Gliese 581g is in the 'Goldilocks zone' of its solar system, where liquid water could exist, and is a strong contender to be a habitable world' it orbits around a red dwarf star called Gliese 581 and is 20 light years (over 117 trillion miles) away.
No other planet in our solar system could support advanced life such as on Earth. Others could support UNintelligent life. Planets in other galaxies that may support life are: OGLE-2005-BLG-390Lb , Gliese 581 c, and Gliese 581 d.
Gliese itself does not exist, but Gliese 581 is a red star.
The temperature is not precisely known. If you read the Wikipedia article on Gliese 581 c, you'll find various estimates, based on different methods.
gliese 581 is a star system not a planet however two of the 3 planets there are debatable that one of them could support life
Gliese is not a living planet.