Telluria is a rocky planet with a molten iron core, similar in size and co-orbital with Earth,
yet 180° away, forever hidden by the sun.
Telluria is orbited by two moons - Mhun Mhór and Mhun Lú - and has a retrograde planetary rotation.
Intelligent life developed on Telluria as it did on Earth, and at a similar pace.
Telluria's current level of technological development is approximately equivalent to Earth of the 1940s.