TOI-178 is a planetary system in the constellation Sculptor around which six planets have been observed, at least five of which orbit in a chain of Laplace resonances, which constitute one of the longest chains yet discovered in a system of planets. The system also has unusual variations in the densities among the planets.
The system is 205 light-years away, which is relatively close, implying that such systems may be relatively common. The brightness of the star, TOI-178, facilitates followup observations, which make it an ideal system in which to expand our understanding of planet formation and evolution.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).