Jack of Harts

One surprise to many scientists was the discovery of habitable worlds around nearby giant star systems.  A giant star is formed when a normal star like our own sun reaches the end of its life cycle and expands, usually eating the life bearing worlds like Earth in the process.  Scientists thought that giant star systems would simply be lifeless.  They were wrong.  Many of our richest colonies are on living worlds in them.  Scientists still can’t explain it.