Books

Rant incoming

The three body problem is chaotic dynamical system. Chaotic means, between other things, that it is unpredictable: given two different starting points, even incredibly close, their behavior will diverge (become different) exponentially fast over time (and we saw during the Covid epidemic that exponentially fast is really damn fast).

So having a super smart mathematician approximating its simulation… that’s a load of bullshit, hot and steamy. That’s a master level example of how not to spend your days, because any approximation you do is going to impact your results exponentially fast.

Furthermore, the three body problem’s solutions don’t need to be bounded. What does this mean? That there is no reason for the planet to stay in orbit of the three suns. Any time it gets far, it could come back, but just as easily keep going further away and lose connection with its starting system. Any time it gets near the suns it could just as easily fall into one of them. So, most likely, during geological ages, the planet would have either gotten ejected or eaten up. If you want to go even further back, there is no way an asteroid belt would generate a planet in these conditions.

Finally, there are well-known configurations of solutions of the three body problem. Configurations are very specific situations (usually assuming two suns of equal mass and a sun that is much smaller and much further away) that can sustain periodic solutions, aka behaviors that repeat after a certain time. If a planet ever got generated in a three suns system, it would definitely need to be in one of these configurations.

The nail in the coffin: if there are three suns and a planet… it’s the four body problem. If you consider the planet to have basically zero mass with respect to the suns, you call it the restricted four body problem.

And this is why knowing way more than the author spoils the fun :( I could not enjoy the science part at all… even when i tried to suspend my disbelief.