I got to the bit about 2 earths circling each other and instantly thought of the Fire/water planets that exist on the opposite side of the sun to earth which is

I got to the bit about 2 earths circling each other and instantly thought of the Fire/water planets that exist on the opposite side of the sun to earth which is why we didn't know they exist, from the TV show Lexx (season 4, worst season ever)