Gliese-581g

Gliese-581g is an exoplanet discovered by radial velocity, although the existence of it is dubious.

Discovery Information
The exponent was discovered by astronomers using LCES. The planet was discovered using radial velocity. After further observation, astronomers determined that it may not exist and have just might've been starspot activity on Gliese-581.

Habitability
Gliese-581g gained great excitement because it was discovered in the habitable zone. A zone where life and liquid water can exist. It also seemed as if the planet was it the center of the habitable zone. The artist's rendition shows most of Earth's properties, such as clouds, grass, and water.