Eirene

Eirene is a planet orbiting the star Epsilon Eridani.

Characteristics
Eirene weighs in at 1.49 Earths, orbits closely around its parent star at only 71% the distance between Earth and the Sun. Eirene is a "proto-Earth" less than a billion years old, though this characteristic is difficult to distinguish due to Earthly plants that have come to dominate the surface after being introduced by human visitors. Its surface is pockmarked with cometary impact craters, many older ones becoming rainwater lakes. Most native life, with the exception of algae, dwells in the single primordial sea.

Eirene was terraformed by the first Human settlers in the mid 22nd century. The atmosphere was already of Earth-like quality, albeit with a higher percentage of oxygen due to a high density of native photosynthetic organisms (something Earth did not possess at a similar age,) and the soil was, with a little modification, able to readily grow most coniferous and tropical Earth trees and other plants. Terraformation of Eirene was completed by 2248.