Finally I will step away from more traditional scenes and think outside of what we know. A double planetary system orbiting within one of a binary star. The red one is a red supergiant a lightyear or so distant, while the parent star is a white dwarf, orbiting half an AU away. The two planets co-orbit each other, while the small moon makes a figure eight between the two. This relationship is temporary, for the moon will eventually impact one of the worlds. That in turn will will upset the orbit of one and inevitably the two will collide, forming a debris ring around the parent star. When the supergiant finally goes nova, not much of this system will remain.
