Guidice describes this Bernal sphere colony: “Way out at the end is the industrial package, then we have our giant solar panels to gather energy, then there’s a polished tube that goes down the center into the inside and these tire-like cylinders that go on down.

"The green inside is the agriculture area. The round sphere beyond that had the habitat inside. Those mirrors that are at different angles shine down on those other mirrors that are right next to the sphere and then shine through a window into the inside of the colony.”