Astronomers have found some pretty wild exoplanets. Some are balls of lava the temperature of hell, one is partially made of diamond, and another may rain molten iron. However, not all exoplanets are this extreme.

An exoplanet is a planet outside our solar system that usually orbits a star in our galaxy. More than 7,000 have been found in the Milky Way since the first confirmed discovery in the 1990s, and "billions more remain to be discovered", said Tech Explorist.

Thirty years after the discovery of the first exoplanet, astronomers have detected more than 7,000 of them in our galaxy. But there are still billions more to be discovered. At the same time, exoplanetologists have begun to take an interest in their characteristics,

HD 20794 d completes its orbit just shy of two Earth years, placing it well within reach of conditions that might harbor life.

Earth" planet that may have conditions suitable for life, according to the University of Oxford. The exoplanet—a planet outside our solar system—has a mass six times greater than that of Earth and orbits in the "habitable zone" of a nearby star similar to our sun,

UK researchers have confirmed the existence of a “super Earth” located 20 light-years away that could reveal the existence of extraterrestrial beings.

Astronomers who identified HD 20794 d say its proximity to its host star and orbital pattern suggest it could hold water.