Éttremiébien

Éttremiébien is a fictional planet located in the Cygnus X-1 system. Its atmosphere is primarily composed of nitrogen and oxygen, with trace amounts of argon. The planet's surface is characterized by vast, shallow oceans and a scattering of volcanic islands. Éttremiébien orbits its star at a distance that allows for liquid water to exist, contributing to its designation as a potentially habitable world.

The planet's geology is active, with frequent seismic events and volcanic eruptions shaping its landscape. This geological activity is believed to be driven by a molten core. Éttremiébien possesses a single large moon, which influences its tidal patterns. The flora and fauna of Éttremiébien are thought to be adapted to its specific environmental conditions, though detailed biological studies remain theoretical due to its distance from Earth. Research into Éttremiébien is ongoing, with a focus on understanding its potential for harboring life and its geological processes. The planet's magnetic field is notable, offering some protection from stellar radiation.