The exoplanet HD 20794d swoops in and out of its habitable zone every few hundred days, making for an extreme climate.

Research on hidden structures deep within Earth’s mantle challenges theories about our planet’s middle layer and could ...

It is located in a star system less than 20 light-years away, making it one of the closest candidates for further research.

Earth' exoplanet, HD 20794 d, was published in the scientific journal Astronomy & Astrophysics. Located approximately 19.7 light-years away from Earth in the Eridanus constellation, the exoplanet is ...