Olson
The planet rotated around three small suns. It was always partyaly day, partyaly night, somewhere in between. Never day. Never night. Three moons rotated around the planet. They were all inhabited.
Chances were some asteroid, comet would eventually hit the planet so before that happened moons got colonized. The largest moon was around three times smaller than the planet and it was called Ru, the second one was around four times smaller than the planet and it was called Fi. The third was around five times smaler than the planet and it was called Oi. Over centuries evolutionary things happened on all the moons inhabitants. They become smaller under the influence if gravity. Now they could walk on their home moon like the Gions from the planet they came from. Yet this was a bit of problematic because visit on the planet would make them cope with higher gravity. Olson lived on Oi, the smallest moon. All the building were made from double glass, with watter inside to heat it to control the temperature. The front glass had a layer of material to absorb light, and the back glass had a layer to radiate light, with a timer and a sensor. In times when radiation wasn't needed it would turn on heating water.
Tunels were build in space between the moons and the planet so trade could go on, only on time when they were in postion.
Asteroids would sometime hit them and move, place them out of postion. Repairs were done before sending containers trough the tunnels.
Capsul with wheet,
Capsul with corn,
Capsul with stuff,
Capsules float.
There were two rivers across the land, one was going in forward direction, the other was going the other way. So it can transport stuff back and forward without lose of energy. Olson was watching containers in the river passing by, everyone had a letters to specify for which city is was going. On top there were solar panels, and all had batteries, to correct the floating direction. Everything was controlled by a satellite and gps.