Gliese 581 c is a planet found in the constellation Libra. The planet orbits the faint star Gliese 581. The planet is 20.4 light-years away from the Earth.
The discovery was made thanks to scientists who found the planet using the Eso 3.6m Telescope at La Silla in the Atacama Desert in Chile.
The methods used are being refined in order to detect a true Earth-like planet elsewhere.
This discovery was reported in the journal Astronomy & Astrophysics.
It is likely tidally locked. This means that one sides always faces the host star and the other side permanently faces away.