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It's a neat possibility for a science fiction author. I've seen the idea used a couple of times. One of the key questions for life is where all the external en
by Kalium 3y ago
It's a neat possibility for a science fiction author. I've seen the idea used a couple of times.
One of the key questions for life is where all the external energy to overcome entropy comes from. Being close to a star without being fried by it is a good way to accomplish this, but there are fewer easy energy sources on a rogue planet.
- pavel_lishin 3y agoThere's a couple of options; the most obvious one is radiothermal heating from radioactive elements in the core, or even just remnant heat from the core slowly working its way up. And if there are pairs of these, then their orbits might be keeping their cores moving and warm due to tides.